280 Rem with 150 grain ABLR

[DrMike]

I worked up a load for one of my .280s. The load was built around 150 grain ABLR. The load worked reasonably well this past season, accounting for a muley (http://www.noslerreloading.com/viewtopic.php?f=5&t=26233) and a fine elk (http://www.noslerreloading.com/viewtopic.php?f=5&t=25444&hilit=150+ABLR). The load was built with 60.0 grains of VN560, producing a velocity of ~3100 fps. With the latest update from QL, I ran this data and discovered that I was quite close to what is projected. The load does not show any signs of pressure in my firearms system, though the projection is slightly over pressure. On the whole, the old method works; but it sure is nice to have the new methodology to project before I get to the range.

Cartridge          : .280 Rem.
Bullet             : .284, 150, Nosler Accubond LR 58734 G7
Useable Case Capaci: 59.185 grain H2O = 3.843 cm³
Cartridge O.A.L. L6: 3.330 inch = 84.58 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Vihtavuori N560

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step    Fill. Charge   Vel.  Energy   Pmax   Pmuz  Prop.Burnt B_Time
 %       %    Grains   fps   ft.lbs    psi    psi      %        ms

-20.0   85    47.36   2343    1829   29130   9083     83.2    1.568
-18.0   87    48.54   2407    1930   31153   9429     84.8    1.527
-16.0   89    49.73   2471    2034   33327   9769     86.4    1.487
-14.0   91    50.91   2536    2142   35660  10101     87.9    1.448
-12.0   93    52.10   2601    2253   38161  10424     89.3    1.405
-10.0   96    53.28   2666    2368   40869  10736     90.6    1.360
-08.0   98    54.46   2732    2487   43777  11036     91.9    1.316
-06.0  100    55.65   2799    2609   46912  11322     93.1    1.274
-04.0  102    56.83   2865    2734   50296  11593     94.2    1.233  ! Near Maximum !
-02.0  104    58.02   2932    2863   53954  11847     95.3    1.194  ! Near Maximum !
+00.0  106    59.20   2999    2996   57913  12083     96.2    1.156  ! Near Maximum !
+02.0  108    60.38   3066    3131   62204  12299     97.0    1.119  !DANGEROUS LOAD-DO NOT USE!
+04.0  110    61.57   3133    3270   66865  12493     97.8    1.084  !DANGEROUS LOAD-DO NOT USE!
+06.0  113    62.75   3201    3412   71934  12665     98.4    1.049  !DANGEROUS LOAD-DO NOT USE!
+08.0  115    63.94   3268    3557   77459  12812     98.9    1.016  !DANGEROUS LOAD-DO NOT USE!
+10.0  117    65.12   3335    3705   83491  12933     99.4    0.984  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba    106    59.20   3170    3347   71074  12060     99.8    1.062  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    106    59.20   2776    2567   46576  11402     88.1    1.276

 

[DrMike]

If I boost the pressure to 63000 psi, I'm well under pressure, however, and right in line with what I observed from the bench.

Cartridge          : .280 Rem.
Bullet             : .284, 150, Nosler Accubond LR 58734 G7
Useable Case Capaci: 59.185 grain H2O = 3.843 cm³
Cartridge O.A.L. L6: 3.330 inch = 84.58 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Vihtavuori N560

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step    Fill. Charge   Vel.  Energy   Pmax   Pmuz  Prop.Burnt B_Time
 %       %    Grains   fps   ft.lbs    psi    psi      %        ms

-20.0   87    48.32   2395    1910   30759   9364     84.5    1.535
-18.0   89    49.53   2460    2016   32948   9712     86.1    1.494
-16.0   91    50.74   2526    2125   35302  10052     87.6    1.454
-14.0   93    51.94   2593    2239   37828  10383     89.1    1.411
-12.0   95    53.15   2659    2356   40567  10703     90.5    1.364
-10.0   98    54.36   2727    2476   43513  11010     91.8    1.320
-08.0  100    55.57   2794    2600   46692  11303     93.0    1.277
-06.0  102    56.78   2862    2728   50131  11580     94.2    1.235
-04.0  104    57.98   2930    2860   53850  11840     95.2    1.195  ! Near Maximum !
-02.0  106    59.19   2999    2995   57886  12081     96.2    1.156  ! Near Maximum !
+00.0  108    60.40   3067    3133   62265  12301     97.0    1.119  ! Near Maximum !
+02.0  111    61.61   3136    3275   67030  12499     97.8    1.083  !DANGEROUS LOAD-DO NOT USE!
+04.0  113    62.82   3204    3420   72221  12673     98.4    1.047  !DANGEROUS LOAD-DO NOT USE!
+06.0  115    64.02   3273    3568   77889  12822     99.0    1.014  !DANGEROUS LOAD-DO NOT USE!
+08.0  117    65.23   3341    3719   84091  12944     99.4    0.981  !DANGEROUS LOAD-DO NOT USE!
+10.0  119    66.44   3410    3873   90895  13037     99.7    0.949  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba    108    60.40   3234    3484   76449  12162     99.9    1.029  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    108    60.40   2845    2696   49970  11715     89.4    1.234

Now, to get to work with some of the other ABLR bullets in a few other cartridges. :grin:

 

[EOD Diver]

Wow Doc, I had no idea how accurate and helpful that QL program could be! Any chance you could run the numbers for a .280AI with a 24" barrel and Nosler case pushing a 168 ABLR with RL22/7828ssc to 63,000 psi? JD338 and I were scratching our heads on achievable velocity and I was wondering just how hard to push it.
Joe

 

[DrMike]

Cartridge          : .280 Ack Imp
Bullet             : .284, 168, Nosler Accubond LR 58623 G7
Useable Case Capaci: 63.519 grain H2O = 4.124 cm³
Cartridge O.A.L. L6: 3.330 inch = 84.58 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Alliant Reloder-22

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step    Fill. Charge   Vel.  Energy   Pmax   Pmuz  Prop.Burnt B_Time
 %       %    Grains   fps   ft.lbs    psi    psi      %        ms

-20.0   82    48.56   2325    2017   31351   9847     91.5    1.624
-18.0   84    49.77   2385    2121   33527  10160     92.8    1.582
-16.0   86    50.99   2445    2229   35858  10461     94.0    1.542
-14.0   88    52.20   2504    2339   38359  10749     95.0    1.495
-12.0   90    53.42   2564    2453   41041  11022     96.0    1.448
-10.0   92    54.63   2624    2568   43920  11279     96.9    1.403
-08.0   94    55.84   2684    2687   47013  11519     97.7    1.359
-06.0   96    57.06   2743    2807   50330  11739     98.3    1.317
-04.0   98    58.27   2803    2930   53859  11940     98.9    1.277  ! Near Maximum !
-02.0  101    59.49   2862    3055   57635  12119     99.3    1.238  ! Near Maximum !
+00.0  103    60.70   2921    3182   61686  12276     99.7    1.200  ! Near Maximum !
+02.0  105    61.91   2980    3312   66035  12410     99.9    1.164  !DANGEROUS LOAD-DO NOT USE!
+04.0  107    63.13   3038    3442   70709  12518    100.0    1.129  !DANGEROUS LOAD-DO NOT USE!
+06.0  109    64.34   3096    3575   75738  12605    100.0    1.095  !DANGEROUS LOAD-DO NOT USE!
+08.0  111    65.56   3153    3709   81158  12684    100.0    1.063  !DANGEROUS LOAD-DO NOT USE!
+10.0  113    66.77   3210    3844   87006  12758    100.0    1.031  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba    103    60.70   3048    3465   74760  11813    100.0    1.109  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    103    60.70   2738    2796   49167  12157     95.1    1.321

Cartridge          : .280 Ack Imp
Bullet             : .284, 168, Nosler Accubond LR 58623 G7
Useable Case Capaci: 63.519 grain H2O = 4.124 cm³
Cartridge O.A.L. L6: 3.330 inch = 84.58 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : IMR 7828 SSC

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step    Fill. Charge   Vel.  Energy   Pmax   Pmuz  Prop.Burnt B_Time
 %       %    Grains   fps   ft.lbs    psi    psi      %        ms

-20.0   81    48.64   2316    2001   31250   9745     89.0    1.611
-18.0   83    49.86   2377    2108   33415  10079     90.4    1.569
-16.0   85    51.07   2438    2218   35735  10401     91.8    1.527
-14.0   87    52.29   2500    2332   38223  10710     93.0    1.481
-12.0   89    53.50   2562    2449   40894  11005     94.2    1.434
-10.0   91    54.72   2624    2569   43763  11284     95.3    1.388
-08.0   93    55.94   2686    2692   46846  11545     96.2    1.344
-06.0   95    57.15   2749    2818   50170  11787     97.1    1.302
-04.0   97    58.37   2811    2947   53750  12008     97.8    1.261  ! Near Maximum !
-02.0   99    59.58   2873    3079   57610  12207     98.5    1.221  ! Near Maximum !
+00.0  101    60.80   2935    3213   61782  12382     99.0    1.183  ! Near Maximum !
+02.0  103    62.02   2997    3350   66295  12533     99.4    1.146  !DANGEROUS LOAD-DO NOT USE!
+04.0  105    63.23   3058    3489   71184  12657     99.7    1.111  !DANGEROUS LOAD-DO NOT USE!
+06.0  107    64.45   3120    3631   76495  12753     99.9    1.076  !DANGEROUS LOAD-DO NOT USE!
+08.0  109    65.66   3181    3774   82267  12821    100.0    1.043  !DANGEROUS LOAD-DO NOT USE!
+10.0  111    66.88   3242    3920   88557  12869    100.0    1.011  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba    101    60.80   3074    3524   75338  11943    100.0    1.092  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    101    60.80   2740    2800   49958  12095     93.2    1.301

Joe, the program will be more accurate still if you get an overfill case capacity measure. Fill the case to the point of a convex meniscus with deoxygenated water to get the overfill capacity, and it becomes quite precise.

 

[DrMike]

Other powders to consider.

Cartridge          : .280 Ack Imp
Bullet             : .284, 168, Nosler Accubond LR 58623 G7
Useable Case Capaci: 63.519 grain H2O = 4.124 cm³
Cartridge O.A.L. L6: 3.330 inch = 84.58 mm
Barrel Length      : 24.0 inch = 609.6 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 62000 psi, or 427 MPa
or a maximum loading ratio or filling of 110 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

28 loads produced a Loading Ratio below user-defined minimum of 90%. These powders have been skipped.
Powder type          Filling/Loading Ratio  Charge    Charge   Vel. Prop.Burnt P max  P muzz  B_Time
                                      %     Grains    Gramm   fps     %       psi     psi    ms
---------------------------------  -----------------------------------------------------------------
Alliant Reloder-25                 108.8     63.3     4.10    2955   100.0    62000   11953   1.185  ! Near Maximum !
Norma MRP                          100.7     61.5     3.99    2953   100.0    62000   12436   1.196  ! Near Maximum !
PB Clermont PCL 517                105.4     65.9     4.27    2953    99.4    62000   12601   1.181  ! Near Maximum !
SNPE Vectan SP 12                  105.2     65.8     4.26    2953    99.4    62000   12577   1.182  ! Near Maximum !
Vihtavuori N560                    102.5     61.3     3.97    2950    98.7    62000   12812   1.191  ! Near Maximum !
Vihtavuori N570                    110.0     67.9     4.40    2946    95.1    57652   13907   1.221  ! Near Maximum !
Accurate MAGPRO                    102.8     64.0     4.15    2942    97.7    62000   12913   1.197  ! Near Maximum !
IMR 7828                           107.0     60.9     3.94    2938    99.1    62000   12391   1.181  ! Near Maximum !
IMR 7828 SSC                       101.2     60.9     3.94    2938    99.1    62000   12391   1.181  ! Near Maximum !
Bofors RP30                        110.0     64.4     4.17    2928    99.2    59612   12776   1.218  ! Near Maximum !
Norma MRP 2                        110.0     64.4     4.17    2928    99.2    59612   12776   1.218  ! Near Maximum !
Alliant Reloder-22                 102.7     60.8     3.94    2925    99.7    62000   12287   1.197  ! Near Maximum !
Raufoss RA15                       102.7     60.8     3.94    2925    99.7    62000   12287   1.197  ! Near Maximum !
Bofors RP5/NP ~approximation       102.7     60.8     3.94    2925    99.7    62000   12287   1.197  ! Near Maximum !
Winchester WXR                     105.5     61.1     3.96    2925    99.6    62000   12307   1.198  ! Near Maximum !
Bofors RP15                        105.5     61.1     3.96    2925    99.6    62000   12307   1.198  ! Near Maximum !
ADI AR 2213                        102.2     60.5     3.92    2924    99.0    62000   12286   1.180  ! Near Maximum !
ReloadSwiss RS 70                   94.2     58.7     3.81    2923   100.0    62000   11537   1.188  ! Near Maximum !
Alliant Reloder-33                 110.0     70.8     4.59    2921    95.2    56952   13715   1.229  ! Near Maximum !
ADI AP 2214                        106.1     64.5     4.18    2919    99.2    62000   12133   1.177  ! Near Maximum !
Ramshot Magnum                     102.6     65.4     4.24    2910    99.9    62000   11745   1.189  ! Near Maximum !
ReloadSwiss RS 60                   91.2     56.0     3.63    2909   100.0    62000   11006   1.191  ! Near Maximum !
Rottweil R905                      103.9     60.4     3.91    2893    98.6    62000   12009   1.198  ! Near Maximum !
Bofors RP5 NT ~approximation       105.8     63.2     4.09    2891    97.4    62000   12155   1.184  ! Near Maximum !
Alliant Reloder-17                  90.2     55.4     3.59    2886   100.0    62000   10924   1.200  ! Near Maximum !
Elcho 17                            90.2     55.4     3.59    2886   100.0    62000   10924   1.200  ! Near Maximum !
ADI AR 2209                         99.0     57.6     3.73    2884    99.6    62000   11636   1.188  ! Near Maximum !
Alliant Reloder-19                  99.5     58.3     3.77    2881    99.6    62000   11700   1.196  ! Near Maximum !
Bofors RP14 ~approximation         100.2     58.7     3.80    2875    99.6    62000   11619   1.196  ! Near Maximum !
PB Clermont PCL 511                 92.0     57.4     3.72    2873   100.0    62000   11264   1.203  ! Near Maximum !
Ramshot Hunter                      95.0     57.5     3.72    2872   100.0    62000   11249   1.203  ! Near Maximum !
Hodgdon H1000                      110.0     63.7     4.13    2871    98.8    58820   11994   1.206  ! Near Maximum !
ADI AR 2217                        110.0     63.7     4.13    2871    98.8    58820   11994   1.206  ! Near Maximum !
ReloadSwiss RS 62                   92.3     56.6     3.67    2860   100.0    62000   10852   1.218  ! Near Maximum !
Hodgdon H4831 SC                   100.7     59.6     3.86    2859    98.4    62000   11584   1.193  ! Near Maximum !
Hodgdon H4831                      104.8     59.6     3.86    2859    98.4    62000   11584   1.193  ! Near Maximum !
Raufoss RA4                         97.5     57.1     3.70    2858    99.5    62000   11401   1.197  ! Near Maximum !
Bofors RP4 ~approximation           97.5     57.1     3.70    2858    99.5    62000   11401   1.197  ! Near Maximum !
Norma 204                           94.4     57.1     3.70    2858    99.5    62000   11401   1.197  ! Near Maximum !
Somchem S365                        96.5     56.2     3.64    2851   100.0    62000   10432   1.216  ! Near Maximum !
Vihtavuori N550                     91.9     55.0     3.56    2848   100.0    62000   10888   1.214  ! Near Maximum !
Norma URP                           94.5     54.8     3.55    2847   100.0    62000   10750   1.210  ! Near Maximum !
Bofors RP19 ~approximation          94.6     54.8     3.55    2847   100.0    62000   10747   1.210  ! Near Maximum !
Somchem S385                        99.7     59.0     3.82    2845    99.9    62000   11154   1.216  ! Near Maximum !
Accurate 4350                       93.7     54.9     3.56    2842   100.0    62000   10707   1.228  ! Near Maximum !
Winchester Supreme 780              98.2     60.6     3.93    2837    99.5    62000   11133   1.202  ! Near Maximum !
Bofors RP4 NT ~approximation        95.1     56.5     3.66    2833    99.9    62000   10941   1.210  ! Near Maximum !
Vihtavuori N165                    105.0     60.8     3.94    2831    99.8    62000   10912   1.206  ! Near Maximum !
Rottweil R904                       98.3     56.8     3.68    2831    98.9    62000   11142   1.199  ! Near Maximum !
Accurate 3100                      102.8     60.2     3.90    2831   100.0    62000   10798   1.231  ! Near Maximum !
Lovex S071                         108.7     60.2     3.90    2831   100.0    62000   10798   1.231  ! Near Maximum !
IMR 4831                            99.2     55.6     3.60    2830   100.0    62000   10518   1.220  ! Near Maximum !
ReloadSwiss RS 80                  110.0     69.9     4.53    2825    94.3    51407   13354   1.286
Hodgdon Retumbo                    110.0     64.8     4.20    2822    99.8    51243   12440   1.285
ADI AR 2225                        110.0     64.8     4.20    2822    99.8    51243   12440   1.285
Hodgdon H4350                       97.0     55.6     3.60    2819    99.9    62000   10747   1.202  ! Near Maximum !
IMR 4350                            95.2     55.5     3.59    2818    99.9    62000   10722   1.202  ! Near Maximum !
Lovex S070                          94.4     54.7     3.54    2817   100.0    62000   10733   1.218  ! Near Maximum !
Vihtavuori N160                    105.0     58.9     3.82    2816    98.8    62000   10948   1.202  ! Near Maximum !
ADI AR 2218                        110.0     68.6     4.45    2806    92.2    51534   13565   1.277
Hodgdon Hybrid 100V                 97.0     55.0     3.56    2804   100.0    62000    9913   1.212  ! Near Maximum !
Somchem S361                        97.4     60.7     3.93    2803    98.3    62000   10954   1.210  ! Near Maximum !
Bofors RP7                          92.3     53.0     3.44    2800    99.9    62000   10594   1.211  ! Near Maximum !
Rottweil R907                       92.3     53.0     3.44    2800    99.9    62000   10594   1.211  ! Near Maximum !
Lovex S065                          93.3     53.4     3.46    2793   100.0    62000   10303   1.218  ! Near Maximum !
Lovex D100                         110.0     69.3     4.49    2783    89.9    59675   11506   1.221  ! Near Maximum !
Vihtavuori 24N41                   110.0     68.6     4.45    2759    87.2    54495   12039   1.257  ! Near Maximum !

 

[pre6422hornet]

Very impressive Dr! I almost pulled the trigger on a classic m70 FWT this week and if i would habe seen this i would have been pushed me over the edge.

That is smoking for a 150 and I bet you could get 3150 with zero issues.

 

[DrMike]

That is smoking for a 150 and I bet you could get 3150 with zero issues.

I have gotten that velocity with the ABLR. That is 7RM velocity. The .280 is woefully underrated; it is a potent round when loaded to its potential.

 

[jmad_81]

Those are some pretty dang impressive numbers Doc.

I'm only getting 3000 with the 150 ABLR out of my 280 AI and 7828. It will put five under .5 MOA, but not nearly as fast as I was hoping for. I have had them up to 3150 with 7828, but they didn't' group well. I was playing around with RL-17 in them and having decent results, but ran out of powder. I'm thinking about trying the 168 ABLR. Figure for 50 fps less with the advantages of more weight and BC, it might be worth it.

I have had great luck with MagPro in my 280 AI in the past with the 160 AB. Might have to give it a try as well.

 

[DrMike]

MagPro should be an excellent powder--good case fill, good velocities.

Cartridge          : .280 Ack Imp
Bullet             : .284, 168, Nosler Accubond LR 58623 G7
Useable Case Capaci: 63.532 grain H2O = 4.125 cm³
Cartridge O.A.L. L6: 3.330 inch = 84.58 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Accurate MAGPRO

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step    Fill. Charge   Vel.  Energy   Pmax   Pmuz  Prop.Burnt B_Time
 %       %    Grains   fps   ft.lbs    psi    psi      %        ms

-20.0   83    51.68   2325    2016   31301  10058     86.5    1.625
-18.0   85    52.97   2388    2128   33578  10417     88.0    1.582
-16.0   87    54.26   2452    2243   36034  10766     89.5    1.539
-14.0   89    55.56   2517    2363   38683  11104     90.9    1.491
-12.0   91    56.85   2581    2486   41546  11430     92.2    1.441
-10.0   93    58.14   2646    2613   44640  11740     93.4    1.393
-08.0   95    59.43   2712    2743   47988  12035     94.5    1.347
-06.0   98    60.72   2777    2877   51612  12311     95.5    1.302
-04.0  100    62.02   2843    3014   55503  12567     96.4    1.260  ! Near Maximum !
-02.0  102    63.31   2908    3155   59697  12803     97.3    1.218  ! Near Maximum !
+00.0  104    64.60   2974    3299   64235  13015     98.0    1.178  ! Near Maximum !
+02.0  106    65.89   3040    3447   69153  13202     98.6    1.140  !DANGEROUS LOAD-DO NOT USE!
+04.0  108    67.18   3105    3597   74490  13363     99.1    1.103  !DANGEROUS LOAD-DO NOT USE!
+06.0  110    68.48   3171    3751   80293  13497     99.5    1.067  !DANGEROUS LOAD-DO NOT USE!
+08.0  112    69.77   3236    3907   86616  13601     99.8    1.032  !DANGEROUS LOAD-DO NOT USE!
+10.0  114    71.06   3302    4067   93519  13674    100.0    0.998  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba    104    64.60   3129    3651   78762  12716    100.0    1.083  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    104    64.60   2764    2849   50594  12541     91.1    1.304

Cartridge          : .280 Ack Imp
Bullet             : .284, 150, Nosler Accubond LR 58734 G7
Useable Case Capaci: 65.294 grain H2O = 4.239 cm³
Cartridge O.A.L. L6: 3.330 inch = 84.58 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Accurate MAGPRO

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step    Fill. Charge   Vel.  Energy   Pmax   Pmuz  Prop.Burnt B_Time
 %       %    Grains   fps   ft.lbs    psi    psi      %        ms

-20.0   85    54.08   2429    1965   30767  10091     83.9    1.556
-18.0   87    55.43   2497    2077   33035  10471     85.6    1.514
-16.0   89    56.78   2566    2193   35485  10843     87.2    1.473
-14.0   91    58.14   2635    2313   38132  11204     88.7    1.428
-12.0   93    59.49   2705    2437   41000  11554     90.1    1.379
-10.0   95    60.84   2775    2565   44105  11889     91.5    1.332
-08.0   97    62.19   2846    2697   47474  12209     92.8    1.287
-06.0   99    63.54   2917    2834   51134  12511     94.0    1.244
-04.0  101    64.90   2988    2974   55110  12794     95.1    1.202
-02.0  104    66.25   3060    3118   59444  13055     96.1    1.161  ! Near Maximum !
+00.0  106    67.60   3131    3266   64123  13292     97.0    1.122  ! Near Maximum !
+02.0  108    68.95   3203    3418   69207  13504     97.7    1.084  !DANGEROUS LOAD-DO NOT USE!
+04.0  110    70.30   3276    3574   74747  13689     98.4    1.047  !DANGEROUS LOAD-DO NOT USE!
+06.0  112    71.66   3348    3733   80797  13844     99.0    1.012  !DANGEROUS LOAD-DO NOT USE!
+08.0  114    73.01   3420    3895   87419  13969     99.4    0.978  !DANGEROUS LOAD-DO NOT USE!
+10.0  116    74.36   3492    4062   94684  14061     99.7    0.945  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba    106    67.60   3306    3641   78962  13151     99.9    1.028  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    106    67.60   2900    2800   50489  12648     89.3    1.244

Cartridge          : .280 Ack Imp
Bullet             : .284, 150, Nosler Accubond LR 58734 G7
Useable Case Capaci: 65.294 grain H2O = 4.239 cm³
Cartridge O.A.L. L6: 3.330 inch = 84.58 mm
Barrel Length      : 24.0 inch = 609.6 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 64000 psi, or 441 MPa
or a maximum loading ratio or filling of 110 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

19 loads produced a Loading Ratio below user-defined minimum of 90%. These powders have been skipped.
Powder type          Filling/Loading Ratio  Charge    Charge   Vel. Prop.Burnt P max  P muzz  B_Time
                                      %     Grains    Gramm   fps     %       psi     psi    ms
---------------------------------  -----------------------------------------------------------------
Norma MRP                          103.6     65.1     4.22    3149    99.9    64000   12924   1.120  ! Near Maximum !
Vihtavuori N560                    105.4     64.8     4.20    3141    98.2    64000   13234   1.116  ! Near Maximum !
PB Clermont PCL 517                108.0     69.4     4.50    3138    98.9    64000   12976   1.108  ! Near Maximum !
SNPE Vectan SP 12                  107.8     69.3     4.49    3137    99.0    64000   12955   1.108  ! Near Maximum !
Accurate MAGPRO                    105.6     67.6     4.38    3129    96.9    64000   13285   1.123  ! Near Maximum !
IMR 7828 SSC                       103.9     64.3     4.16    3127    98.5    64000   12799   1.107  ! Near Maximum !
IMR 7828                           109.9     64.3     4.16    3127    98.5    64000   12799   1.107  ! Near Maximum !
ReloadSwiss RS 70                   96.9     62.1     4.03    3120   100.0    64000   12018   1.112  ! Near Maximum !
Bofors RP5/NP ~approximation       105.6     64.3     4.16    3117    99.3    64000   12732   1.122  ! Near Maximum !
Alliant Reloder-22                 105.6     64.3     4.16    3117    99.3    64000   12732   1.122  ! Near Maximum !
Raufoss RA15                       105.6     64.3     4.16    3117    99.3    64000   12732   1.122  ! Near Maximum !
Winchester WXR                     108.5     64.6     4.18    3116    99.3    64000   12746   1.123  ! Near Maximum !
Bofors RP15                        108.5     64.6     4.18    3116    99.3    64000   12746   1.123  ! Near Maximum !
ReloadSwiss RS 60                   94.1     59.4     3.85    3112   100.0    64000   11484   1.115  ! Near Maximum !
ADI AR 2213                        104.9     63.8     4.14    3111    98.4    64000   12679   1.106  ! Near Maximum !
ADI AP 2214                        108.7     67.9     4.40    3100    98.6    64000   12490   1.105  ! Near Maximum !
Alliant Reloder-25                 110.0     65.9     4.27    3098   100.0    60355   12354   1.141  ! Near Maximum !
Ramshot Magnum                     105.2     69.0     4.47    3095    99.7    64000   12139   1.115  ! Near Maximum !
Alliant Reloder-17                  93.0     58.7     3.80    3086   100.0    64000   11403   1.123  ! Near Maximum !
Elcho 17                            93.0     58.7     3.80    3086   100.0    64000   11403   1.123  ! Near Maximum !
Rottweil R905                      106.8     63.8     4.13    3081    98.1    64000   12398   1.123  ! Near Maximum !
ADI AR 2209                        101.8     60.9     3.95    3074    99.2    64000   12061   1.113  ! Near Maximum !
Bofors RP5 NT ~approximation       108.5     66.6     4.32    3072    96.6    64000   12478   1.111  ! Near Maximum !
Alliant Reloder-19                 102.3     61.6     3.99    3072    99.2    64000   12131   1.121  ! Near Maximum !
PB Clermont PCL 511                 94.7     60.7     3.93    3067   100.0    64000   11746   1.127  ! Near Maximum !
Ramshot Hunter                      97.8     60.8     3.94    3065   100.0    64000   11729   1.127  ! Near Maximum !
Bofors RP14 ~approximation         103.1     62.0     4.02    3065    99.2    64000   12043   1.122  ! Near Maximum !
Hodgdon H414                        92.4     58.8     3.81    3064    99.9    64000   11782   1.129  ! Near Maximum !
Winchester 760                      92.4     58.8     3.81    3064    99.9    64000   11782   1.129  ! Near Maximum !
ReloadSwiss RS 62                   95.1     60.0     3.89    3056   100.0    64000   11327   1.141  ! Near Maximum !
Somchem S365                        99.5     59.6     3.86    3050   100.0    64000   10887   1.138  ! Near Maximum !
Raufoss RA4                        100.2     60.3     3.91    3047    99.1    64000   11817   1.122  ! Near Maximum !
Bofors RP4 ~approximation          100.2     60.3     3.91    3047    99.1    64000   11817   1.122  ! Near Maximum !
Norma 204                           97.1     60.3     3.91    3047    99.1    64000   11817   1.122  ! Near Maximum !
Hodgdon H4831                      107.6     63.0     4.08    3044    97.8    64000   11946   1.118  ! Near Maximum !
Hodgdon H4831 SC                   103.5     63.0     4.08    3044    97.8    64000   11946   1.118  ! Near Maximum !
Vihtavuori N550                     94.6     58.2     3.77    3043   100.0    64000   11365   1.138  ! Near Maximum !
Norma URP                           97.4     58.0     3.76    3043   100.0    64000   11224   1.134  ! Near Maximum !
Bofors RP19 ~approximation          97.4     58.0     3.76    3043   100.0    64000   11221   1.134  ! Near Maximum !
Accurate 4350                       96.5     58.1     3.76    3038   100.0    64000   11182   1.151  ! Near Maximum !
Somchem S385                       102.5     62.4     4.04    3033    99.7    64000   11583   1.140  ! Near Maximum !
IMR 4831                           102.2     58.9     3.82    3023   100.0    64000   10977   1.143  ! Near Maximum !
Bofors RP4 NT ~approximation        97.8     59.8     3.87    3023    99.8    64000   11380   1.134  ! Near Maximum !
Winchester Supreme 780             100.8     64.0     4.14    3021    99.1    64000   11505   1.126  ! Near Maximum !
Vihtavuori N570                    110.0     69.8     4.52    3020    92.3    53697   13796   1.203
Accurate 3100                      105.6     63.6     4.12    3019   100.0    64000   11235   1.154  ! Near Maximum !
Norma MRP 2                        110.0     66.2     4.29    3018    97.7    55281   12919   1.197  ! Near Maximum !
Bofors RP30                        110.0     66.2     4.29    3018    97.7    55281   12919   1.197  ! Near Maximum !
Rottweil R904                      101.1     60.0     3.89    3017    98.4    64000   11528   1.124  ! Near Maximum !
Vihtavuori N165                    107.8     64.2     4.16    3016    99.5    64000   11304   1.131  ! Near Maximum !
Hodgdon H4350                       99.8     58.8     3.81    3007    99.6    64000   11176   1.127  ! Near Maximum !
Lovex S070                          97.1     57.8     3.75    3007    99.9    64000   11189   1.141  ! Near Maximum !
IMR 4350                            98.0     58.7     3.80    3007    99.7    64000   11153   1.127  ! Near Maximum !
Hodgdon H380                        90.1     55.4     3.59    3001   100.0    64000   10847   1.141  ! Near Maximum !
Vihtavuori N160                    107.8     62.2     4.03    2999    98.3    64000   11310   1.127  ! Near Maximum !
Hodgdon Hybrid 100V                100.0     58.2     3.77    2998   100.0    64000   10346   1.135  ! Near Maximum !
Alliant Reloder-33                 110.0     72.8     4.71    2991    92.4    53033   13585   1.211
Bofors RP7                          95.0     56.1     3.64    2988    99.6    64000   11027   1.135  ! Near Maximum !
Rottweil R907                       95.0     56.1     3.64    2988    99.6    64000   11027   1.135  ! Near Maximum !
IMR 4007 SSC                        92.0     56.1     3.64    2988    99.6    64000   11020   1.135  ! Near Maximum !
Norma 203 old                       90.3     54.9     3.56    2985   100.0    64000   10436   1.153  ! Near Maximum !
Bofors RP3                          90.3     54.9     3.56    2985   100.0    64000   10436   1.153  ! Near Maximum !
Somchem S361                       100.0     64.1     4.15    2983    97.7    64000   11291   1.135  ! Near Maximum !
Lovex S065                          96.1     56.6     3.67    2983   100.0    64000   10758   1.141  ! Near Maximum !
Rottweil R903                       92.3     55.0     3.56    2980   100.0    64000   10351   1.153  ! Near Maximum !
Somchem S355                        92.6     54.5     3.53    2977   100.0    64000   10371   1.146  ! Near Maximum !
Lovex S071                         110.0     62.6     4.06    2971    99.9    60498   11169   1.184  ! Near Maximum !
Hodgdon H1000                      110.0     65.5     4.24    2959    97.1    55231   12096   1.182
ADI AR 2217                        110.0     65.5     4.24    2959    97.1    55231   12096   1.182
Accurate 2700                       92.1     57.8     3.75    2939    99.6    64000   10413   1.139  ! Near Maximum !

 

[EOD Diver]

Doc,
Thanks for the data on 280AI with the 150 ABLR. Man, from the looks of it I might have to invest in some Norma MRP! It looks like the go to in 280AI. I've heard it is pretty temperature stable. Anyone care to expand on this?
Thanks Again,
Joe

 

[JD338]

Joe,

MRP and RL 22 are basically the same. I have had great luck with RL 22.

JD338

 

[EOD Diver]

RL 22 made my daughter's 270 Win really shoot and I'm a big fan too, but I've heard it's a little more temp. sensitive than others out there. Because it carries so nicely, our Kimber 280AI finds itself in 90 Degree heat for antelope and single digits for 3rd season elk. I've also heard about the stability of MRP. Any info you've got regarding the two would be appreiciated.
Joe

 

[Oldtrader3]

I just bought (4) boxes of Nosler 168 ABLR for my 7mm Mag (Rem). I put my second HD5 Zeiss 3-15x42 on the 7mag and will try these long range loads and see how they match up to the scope trajectory curve to 600 years. They are not really fast from the muzzle at 2880 fps but my 7mm mag has slowed sown over the past 3-4 years and does not get to 3000 fps much anymore anyway. If I can duplicate the factory ballistics and drop, I will be happy with this load.
Charlie

 

[SJB358]

That's awesome Mike. It seems the ABLR's are playing out to be a little more slippery, as we were seeing with our chrono's as well. Can't wait to get back to work with them. That new update looks real good.

 

[DrMike]

That's awesome Mike. It seems the ABLR's are playing out to be a little more slippery, as we were seeing with our chrono's as well. Can't wait to get back to work with them. That new update looks real good.

You will appreciate the new data, Scotty. I believe you are correct on the ABLR bullets.

 

[double_d]

DrMike,

Do you mind running the QL for 160AB and the 280 ackley?

I just picked up a kimber Montana and have a pile of the 160's

Thank you!

 

[Songdog]

Let's see how quick a 7RM will run them at 60k and 63k respectively?

I've clocked them at 3150-3200... but ran into some pressure anytime I was over 3200.

Be interesting to see anyway....

 

[DrMike]

DrMike,

Do you mind running the QL for 160AB and the 280 ackley?

I just picked up a kimber Montana and have a pile of the 160's

Thank you!

Cartridge          : .280 Ack Imp
Bullet             : .284, 160, Nosler AccuBond 54932
Useable Case Capaci: 64.303 grain H2O = 4.175 cm³
Cartridge O.A.L. L6: 3.330 inch = 84.58 mm
Barrel Length      : 24.0 inch = 609.6 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 64000 psi, or 441 MPa
or a maximum loading ratio or filling of 110 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

22 loads produced a Loading Ratio below user-defined minimum of 90%. These powders have been skipped.
Powder type          Filling/Loading Ratio  Charge    Charge   Vel. Prop.Burnt P max  P muzz  B_Time
                                      %     Grains    Gramm   fps     %       psi     psi    ms
---------------------------------  -----------------------------------------------------------------
Norma MRP                          102.5     63.4     4.11    3051   100.0    64000   12706   1.153  ! Near Maximum !
PB Clermont PCL 517                107.0     67.7     4.39    3047    99.3    64000   12826   1.139  ! Near Maximum !
Vihtavuori N560                    104.2     63.1     4.09    3047    98.6    64000   13075   1.148  ! Near Maximum !
SNPE Vectan SP 12                  106.8     67.6     4.38    3047    99.3    64000   12803   1.139  ! Near Maximum !
Accurate MAGPRO                    104.5     65.8     4.27    3038    97.5    64000   13159   1.154  ! Near Maximum !
Alliant Reloder-25                 110.0     64.9     4.20    3036   100.0    62742   12180   1.153  ! Near Maximum !
IMR 7828                           108.8     62.6     4.06    3034    99.0    64000   12641   1.138  ! Near Maximum !
IMR 7828 SSC                       102.9     62.6     4.06    3034    99.0    64000   12641   1.138  ! Near Maximum !
Raufoss RA15                       104.5     62.6     4.06    3023    99.6    64000   12550   1.154  ! Near Maximum !
Alliant Reloder-22                 104.5     62.6     4.06    3023    99.6    64000   12550   1.154  ! Near Maximum !
Bofors RP5/NP ~approximation       104.5     62.6     4.06    3023    99.6    64000   12550   1.154  ! Near Maximum !
ReloadSwiss RS 70                   95.9     60.5     3.92    3022   100.0    64000   11799   1.144  ! Near Maximum !
Winchester WXR                     107.3     62.9     4.08    3021    99.6    64000   12567   1.154  ! Near Maximum !
Bofors RP15                        107.3     62.9     4.08    3021    99.6    64000   12567   1.154  ! Near Maximum !
ADI AR 2213                        103.9     62.2     4.03    3020    98.9    64000   12533   1.137  ! Near Maximum !
ADI AP 2214                        107.7     66.3     4.29    3012    99.1    64000   12354   1.135  ! Near Maximum !
ReloadSwiss RS 60                   93.0     57.8     3.75    3009   100.0    64000   11270   1.148  ! Near Maximum !
Ramshot Magnum                     104.2     67.3     4.36    3004    99.9    64000   11965   1.146  ! Near Maximum !
Rottweil R905                      105.7     62.2     4.03    2989    98.5    64000   12254   1.154  ! Near Maximum !
Alliant Reloder-17                  91.9     57.2     3.70    2985   100.0    64000   11189   1.156  ! Near Maximum !
Elcho 17                            91.9     57.2     3.70    2985   100.0    64000   11189   1.156  ! Near Maximum !
Bofors RP5 NT ~approximation       107.5     65.0     4.21    2985    97.2    64000   12381   1.141  ! Near Maximum !
ADI AR 2209                        100.7     59.4     3.85    2980    99.5    64000   11891   1.145  ! Near Maximum !
Vihtavuori N570                    110.0     68.7     4.45    2978    93.9    55912   13905   1.212  ! Near Maximum !
Alliant Reloder-19                 101.3     60.0     3.89    2978    99.5    64000   11959   1.152  ! Near Maximum !
Bofors RP14 ~approximation         102.0     60.5     3.92    2971    99.5    64000   11874   1.153  ! Near Maximum !
PB Clermont PCL 511                 93.7     59.2     3.83    2971   100.0    64000   11530   1.159  ! Near Maximum !
Ramshot Hunter                      96.8     59.2     3.84    2969   100.0    64000   11514   1.159  ! Near Maximum !
Hodgdon H414                        91.4     57.3     3.71    2968   100.0    64000   11571   1.161  ! Near Maximum !
Winchester 760                      91.4     57.3     3.71    2968   100.0    64000   11571   1.161  ! Near Maximum !
Norma MRP 2                        110.0     65.2     4.23    2967    98.6    57703   12881   1.207  ! Near Maximum !
Bofors RP30                        110.0     65.2     4.23    2967    98.6    57703   12881   1.207  ! Near Maximum !
ReloadSwiss RS 62                   94.0     58.4     3.79    2958   100.0    64000   11111   1.173  ! Near Maximum !
Norma 204                           96.1     58.8     3.81    2954    99.4    64000   11653   1.153  ! Near Maximum !
Raufoss RA4                         99.2     58.8     3.81    2954    99.4    64000   11653   1.153  ! Near Maximum !
Bofors RP4 ~approximation           99.2     58.8     3.81    2954    99.4    64000   11653   1.153  ! Near Maximum !
Hodgdon H4831 SC                   102.4     61.4     3.98    2954    98.3    64000   11817   1.150  ! Near Maximum !
Hodgdon H4831                      106.6     61.4     3.98    2954    98.3    64000   11817   1.150  ! Near Maximum !
Alliant Reloder-33                 110.0     71.7     4.64    2951    94.0    55228   13704   1.220
Somchem S365                        98.3     58.0     3.76    2949   100.0    64000   10681   1.171  ! Near Maximum !
Vihtavuori N550                     93.6     56.7     3.67    2946   100.0    64000   11154   1.170  ! Near Maximum !
Norma URP                           96.3     56.5     3.66    2945   100.0    64000   11012   1.166  ! Near Maximum !
Bofors RP19 ~approximation          96.4     56.5     3.66    2945   100.0    64000   11009   1.166  ! Near Maximum !
Somchem S385                       101.5     60.8     3.94    2940    99.8    64000   11400   1.172  ! Near Maximum !
Accurate 4350                       95.5     56.6     3.67    2940   100.0    64000   10963   1.183  ! Near Maximum !
Winchester Supreme 780              99.8     62.4     4.04    2930    99.4    64000   11357   1.158  ! Near Maximum !
Bofors RP4 NT ~approximation        96.8     58.3     3.78    2929    99.9    64000   11192   1.166  ! Near Maximum !
IMR 4831                           101.1     57.4     3.72    2926   100.0    64000   10770   1.175  ! Near Maximum !
Rottweil R904                      100.1     58.5     3.79    2926    98.8    64000   11385   1.155  ! Near Maximum !
Accurate 3100                      104.5     62.0     4.02    2925   100.0    64000   11032   1.186  ! Near Maximum !
Vihtavuori N165                    106.7     62.6     4.06    2925    99.7    64000   11141   1.162  ! Near Maximum !
Hodgdon H4350                       98.8     57.3     3.71    2915    99.8    64000   10998   1.158  ! Near Maximum !
IMR 4350                            97.0     57.2     3.71    2914    99.9    64000   10973   1.158  ! Near Maximum !
Lovex S070                          96.1     56.4     3.65    2913   100.0    64000   10992   1.173  ! Near Maximum !
Lovex S071                         110.0     61.7     4.00    2911   100.0    62886   11013   1.196  ! Near Maximum !
Hodgdon H1000                      110.0     64.5     4.18    2909    98.1    57249   12080   1.194  ! Near Maximum !
ADI AR 2217                        110.0     64.5     4.18    2909    98.1    57249   12080   1.194  ! Near Maximum !
Vihtavuori N160                    106.8     60.7     3.93    2909    98.7    64000   11176   1.158  ! Near Maximum !
Hodgdon Hybrid 100V                 98.9     56.7     3.67    2900   100.0    64000   10151   1.168  ! Near Maximum !
Bofors RP7                          94.0     54.7     3.54    2895    99.8    64000   10848   1.167  ! Near Maximum !
Rottweil R907                       94.0     54.7     3.54    2895    99.8    64000   10848   1.167  ! Near Maximum !
Somchem S361                        99.0     62.5     4.05    2895    98.2    64000   11174   1.166  ! Near Maximum !
IMR 4007 SSC                        91.1     54.7     3.55    2895    99.8    64000   10841   1.167  ! Near Maximum !
Lovex S065                          95.1     55.1     3.57    2889   100.0    64000   10557   1.173  ! Near Maximum !
Rottweil R903                       91.3     53.5     3.47    2882   100.0    64000   10150   1.186  ! Near Maximum !
Somchem S355                        91.6     53.1     3.44    2880   100.0    64000   10175   1.179  ! Near Maximum !
ADI AR 2225                        110.0     65.6     4.25    2857    99.4    49799   12573   1.275
Hodgdon Retumbo                    110.0     65.6     4.25    2857    99.4    49799   12573   1.275
ReloadSwiss RS 80                  110.0     70.7     4.58    2852    93.0    49869   13317   1.277
Accurate 2700                       91.2     56.4     3.66    2849    99.8    64000   10252   1.171  ! Near Maximum !

Cartridge          : .280 Ack Imp
Bullet             : .284, 160, Nosler AccuBond 54932
Useable Case Capaci: 64.303 grain H2O = 4.175 cm³
Cartridge O.A.L. L6: 3.330 inch = 84.58 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Vihtavuori N560

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step    Fill. Charge   Vel.  Energy   Pmax   Pmuz  Prop.Burnt B_Time
 %       %    Grains   fps   ft.lbs    psi    psi      %        ms

-20.0   83    50.56   2407    2058   32194  10228     88.2    1.565
-18.0   86    51.82   2470    2168   34456  10580     89.7    1.524
-16.0   88    53.09   2534    2282   36883  10921     91.0    1.484
-14.0   90    54.35   2598    2399   39489  11250     92.3    1.436
-12.0   92    55.62   2663    2519   42289  11566     93.5    1.389
-10.0   94    56.88   2727    2643   45298  11866     94.6    1.345
-08.0   96    58.14   2792    2769   48535  12150     95.6    1.302
-06.0   98    59.41   2857    2899   52023  12415     96.5    1.261
-04.0  100    60.67   2921    3032   55784  12660     97.4    1.221  ! Near Maximum !
-02.0  102    61.94   2986    3167   59843  12884     98.1    1.183  ! Near Maximum !
+00.0  104    63.20   3050    3306   64224  13085     98.7    1.146  ! Near Maximum !
+02.0  106    64.46   3115    3447   68923  13261     99.1    1.110  !DANGEROUS LOAD-DO NOT USE!
+04.0  109    65.73   3179    3590   73988  13412     99.5    1.076  !DANGEROUS LOAD-DO NOT USE!
+06.0  111    66.99   3243    3736   79460  13535     99.8    1.043  !DANGEROUS LOAD-DO NOT USE!
+08.0  113    68.26   3307    3884   85382  13631    100.0    1.011  !DANGEROUS LOAD-DO NOT USE!
+10.0  115    69.52   3370    4035   91800  13698    100.0    0.979  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba    104    63.20   3198    3634   78163  12710    100.0    1.057  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    104    63.20   2846    2878   51312  12706     92.5    1.263

Cartridge          : .280 Ack Imp
Bullet             : .284, 160, Nosler AccuBond 54932
Useable Case Capaci: 64.303 grain H2O = 4.175 cm³
Cartridge O.A.L. L6: 3.330 inch = 84.58 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Accurate MAGPRO

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step    Fill. Charge   Vel.  Energy   Pmax   Pmuz  Prop.Burnt B_Time
 %       %    Grains   fps   ft.lbs    psi    psi      %        ms

-20.0   84    52.72   2369    1994   31067  10096     85.4    1.593
-18.0   86    54.04   2435    2106   33347  10466     87.0    1.550
-16.0   88    55.36   2501    2222   35800  10826     88.5    1.509
-14.0   90    56.67   2567    2341   38449  11175     89.9    1.462
-12.0   92    57.99   2634    2465   41313  11512     91.3    1.413
-10.0   94    59.31   2701    2592   44412  11834     92.6    1.365
-08.0   96    60.63   2769    2723   47769  12140     93.8    1.320
-06.0   98    61.95   2836    2858   51412  12429     94.9    1.275
-04.0  100    63.26   2905    2997   55357  12698     95.9    1.233  ! Near Maximum !
-02.0  102    64.58   2973    3140   59603  12945     96.8    1.192  ! Near Maximum !
+00.0  105    65.90   3041    3285   64200  13168     97.6    1.152  ! Near Maximum !
+02.0  107    67.22   3109    3435   69190  13367     98.3    1.114  !DANGEROUS LOAD-DO NOT USE!
+04.0  109    68.54   3178    3588   74615  13539     98.8    1.077  !DANGEROUS LOAD-DO NOT USE!
+06.0  111    69.85   3246    3744   80523  13683     99.3    1.042  !DANGEROUS LOAD-DO NOT USE!
+08.0  113    71.17   3315    3903   86973  13796     99.6    1.007  !DANGEROUS LOAD-DO NOT USE!
+10.0  115    72.49   3383    4065   94031  13878     99.9    0.974  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba    105    65.90   3204    3648   78865  12938    100.0    1.058  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    105    65.90   2821    2828   50550  12618     90.3    1.277

 

[DrMike]

Let's see how quick a 7RM will run them at 60k and 63k respectively?

I've clocked them at 3150-3200... but ran into some pressure anytime I was over 3200.

Be interesting to see anyway....

Cartridge          : 7 mm Rem. Mag.(SAAMI)
Bullet             : .284, 160, Nosler AccuBond 54932
Useable Case Capaci: 72.293 grain H2O = 4.694 cm³
Cartridge O.A.L. L6: 3.290 inch = 83.57 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Vihtavuori N560

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step    Fill. Charge   Vel.  Energy   Pmax   Pmuz  Prop.Burnt B_Time
 %       %    Grains   fps   ft.lbs    psi    psi      %        ms

-20.0   78    53.20   2402    2050   30650  10717     88.6    1.616
-18.0   80    54.53   2464    2157   32720  11086     90.0    1.576
-16.0   82    55.86   2526    2267   34926  11444     91.3    1.537
-14.0   84    57.19   2589    2380   37295  11791     92.5    1.496
-12.0   86    58.52   2651    2497   39823  12126     93.7    1.450
-10.0   88    59.85   2713    2616   42525  12445     94.7    1.405
-08.0   90    61.18   2776    2737   45416  12749     95.7    1.362
-06.0   92    62.51   2838    2862   48515  13035     96.6    1.321
-04.0   94    63.84   2901    2989   51805  13301     97.4    1.281  ! Near Maximum !
-02.0   96    65.17   2963    3119   55298  13548     98.1    1.243  ! Near Maximum !
+00.0   98    66.50   3025    3251   59027  13773     98.7    1.206  ! Near Maximum !
+02.0  100    67.83   3087    3385   63011  13975     99.1    1.170  !DANGEROUS LOAD-DO NOT USE!
+04.0  102    69.16   3148    3521   67269  14152     99.5    1.136  !DANGEROUS LOAD-DO NOT USE!
+06.0  104    70.49   3209    3659   71825  14305     99.8    1.103  !DANGEROUS LOAD-DO NOT USE!
+08.0  105    71.82   3270    3800   76705  14430     99.9    1.070  !DANGEROUS LOAD-DO NOT USE!
+10.0  107    73.15   3331    3941   81935  14528    100.0    1.039  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba     98    66.50   3172    3575   71305  13424    100.0    1.112  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     98    66.50   2823    2832   47271  13340     92.6    1.329

Cartridge          : 7 mm Rem. Mag.(SAAMI)
Bullet             : .284, 160, Nosler AccuBond 54932
Useable Case Capaci: 72.293 grain H2O = 4.694 cm³
Cartridge O.A.L. L6: 3.290 inch = 83.57 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Vihtavuori N560

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step    Fill. Charge   Vel.  Energy   Pmax   Pmuz  Prop.Burnt B_Time
 %       %    Grains   fps   ft.lbs    psi    psi      %        ms

-20.0   79    53.84   2432    2101   31628  10895     89.2    1.596
-18.0   81    55.19   2495    2211   33793  11264     90.6    1.557
-16.0   83    56.53   2558    2324   36099  11621     91.9    1.518
-14.0   85    57.88   2621    2440   38581  11966     93.1    1.472
-12.0   87    59.22   2684    2559   41230  12297     94.3    1.426
-10.0   89    60.57   2747    2681   44068  12612     95.3    1.382
-08.0   91    61.92   2810    2806   47106  12909     96.2    1.339
-06.0   93    63.26   2874    2934   50352  13188     97.1    1.298
-04.0   95    64.61   2937    3064   53795  13446     97.8    1.259  ! Near Maximum !
-02.0   97    65.95   2999    3196   57467  13683     98.4    1.221  ! Near Maximum !
+00.0   99    67.30   3062    3331   61392  13897     99.0    1.184  ! Near Maximum !
+02.0  101    68.65   3124    3468   65589  14087     99.4    1.149  !DANGEROUS LOAD-DO NOT USE!
+04.0  103    69.99   3187    3607   70083  14251     99.7    1.115  !DANGEROUS LOAD-DO NOT USE!
+06.0  105    71.34   3248    3749   74897  14388     99.9    1.082  !DANGEROUS LOAD-DO NOT USE!
+08.0  107    72.68   3310    3891   80061  14497    100.0    1.050  !DANGEROUS LOAD-DO NOT USE!
+10.0  109    74.03   3370    4036   85606  14582    100.0    1.020  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba     99    67.30   3207    3653   74124  13493    100.0    1.092  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     99    67.30   2862    2909   49146  13533     93.2    1.305

 

[Songdog]

How about all powders for 7 RM?