quick load request

[salmonchaser]

I just fire formed some Nosler 8mm mag brass to 338 Jarrett.
H20 101.75
26 barrel
250 gr AB and Partition
7828, rl 19
Col. 3.6
Thanks in advance
Don

 

[SJB358]

I used a 340 Wby for the load work Don. Matches almost to a T..

Cartridge : .340 Weath. Mag.
Bullet : .338, 250, Nosler PART SP 35644
Useable Case Capaci: 88.120 grain H2O = 5.721 cm³
Cartridge O.A.L. L6: 3.600 inch = 91.44 mm
Barrel Length : 26.0 inch = 660.4 mm
Powder : Alliant Reloder-19

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 80 64.80 2327 3005 33582 8745 94.0 1.673
-18.0 82 66.42 2382 3149 35805 8993 95.0 1.629
-16.0 84 68.04 2436 3295 38173 9230 95.9 1.583
-14.0 86 69.66 2491 3445 40692 9456 96.7 1.536
-12.0 88 71.28 2546 3598 43380 9670 97.4 1.492
-10.0 90 72.90 2600 3753 46227 9871 98.1 1.448
-08.0 92 74.52 2654 3910 49233 10058 98.6 1.407
-06.0 94 76.14 2708 4071 52426 10230 99.1 1.367
-04.0 96 77.76 2761 4233 55824 10387 99.5 1.329 ! Near Maximum !
-02.0 98 79.38 2815 4397 59442 10527 99.7 1.292 ! Near Maximum !
+00.0 100 81.00 2867 4564 63296 10651 99.9 1.256 ! Near Maximum !
+02.0 102 82.62 2920 4732 67405 10756 100.0 1.221 !DANGEROUS LOAD-DO NOT USE!
+04.0 104 84.24 2972 4902 71788 10846 100.0 1.188 !DANGEROUS LOAD-DO NOT USE!
+06.0 106 85.86 3023 5074 76469 10931 100.0 1.156 !DANGEROUS LOAD-DO NOT USE!
+08.0 108 87.48 3074 5247 81473 11013 100.0 1.125 !DANGEROUS LOAD-DO NOT USE!
+10.0 110 89.10 3125 5422 86829 11092 100.0 1.095 !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 100 81.00 2971 4899 74957 10255 100.0 1.172 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 100 81.00 2716 4095 51801 10689 96.6 1.367


Cartridge : .340 Weath. Mag.
Bullet : .338, 250, Nosler AccuBond 57287
Useable Case Capaci: 84.107 grain H2O = 5.461 cm³
Cartridge O.A.L. L6: 3.600 inch = 91.44 mm
Barrel Length : 26.0 inch = 660.4 mm
Powder : Alliant Reloder-19

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 62.80 2306 2953 33303 8380 93.5 1.681
-18.0 83 64.37 2361 3095 35516 8620 94.5 1.637
-16.0 85 65.94 2416 3241 37881 8852 95.5 1.590
-14.0 87 67.51 2471 3389 40397 9072 96.3 1.543
-12.0 89 69.08 2525 3540 43083 9281 97.1 1.498
-10.0 91 70.65 2580 3695 45947 9477 97.8 1.454
-08.0 93 72.22 2634 3851 49004 9661 98.4 1.412
-06.0 95 73.79 2688 4011 52240 9830 98.9 1.372
-04.0 97 75.36 2742 4173 55677 9984 99.3 1.333 ! Near Maximum !
-02.0 99 76.93 2795 4337 59343 10123 99.6 1.295 ! Near Maximum !
+00.0 101 78.50 2848 4503 63255 10246 99.8 1.259 ! Near Maximum !
+02.0 103 80.07 2901 4671 67434 10351 100.0 1.224 !DANGEROUS LOAD-DO NOT USE!
+04.0 105 81.64 2953 4841 71902 10439 100.0 1.191 !DANGEROUS LOAD-DO NOT USE!
+06.0 107 83.21 3005 5013 76684 10516 100.0 1.158 !DANGEROUS LOAD-DO NOT USE!
+08.0 109 84.78 3057 5186 81807 10590 100.0 1.127 !DANGEROUS LOAD-DO NOT USE!
+10.0 111 86.35 3108 5362 87303 10660 100.0 1.097 !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 78.50 2953 4842 75113 9860 100.0 1.175 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 101 78.50 2695 4031 51656 10249 96.2 1.371


7828

Cartridge : .340 Weath. Mag.
Bullet : .338, 250, Nosler PART SP 35644
Useable Case Capaci: 88.120 grain H2O = 5.721 cm³
Cartridge O.A.L. L6: 3.600 inch = 91.44 mm
Barrel Length : 26.0 inch = 660.4 mm
Powder : IMR 7828

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 86 67.60 2321 2991 31881 9093 91.1 1.691
-18.0 88 69.29 2381 3148 34094 9383 92.4 1.644
-16.0 90 70.98 2441 3309 36466 9660 93.6 1.599
-14.0 92 72.67 2502 3474 39010 9924 94.7 1.550
-12.0 94 74.36 2562 3644 41741 10173 95.7 1.500
-10.0 96 76.05 2623 3818 44676 10406 96.6 1.454
-08.0 98 77.74 2683 3996 47832 10621 97.4 1.408
-06.0 101 79.43 2743 4177 51228 10817 98.1 1.364
-04.0 103 81.12 2803 4363 54889 10993 98.7 1.322
-02.0 105 82.81 2863 4551 58837 11148 99.2 1.281 ! Near Maximum !
+00.0 107 84.50 2923 4743 63107 11279 99.6 1.242 ! Near Maximum !
+02.0 109 86.19 2982 4938 67726 11388 99.8 1.204 !DANGEROUS LOAD-DO NOT USE!
+04.0 111 87.88 3042 5135 72731 11471 100.0 1.167 !DANGEROUS LOAD-DO NOT USE!
+06.0 113 89.57 3100 5336 78165 11530 100.0 1.131 !DANGEROUS LOAD-DO NOT USE!
+08.0 116 91.26 3159 5538 84077 11579 100.0 1.097 !DANGEROUS LOAD-DO NOT USE!
+10.0 118 92.95 3217 5744 90512 11624 100.0 1.064 !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 107 84.50 3050 5163 76936 10795 100.0 1.149 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 107 84.50 2739 4165 50989 11192 94.7 1.362


Cartridge : .340 Weath. Mag.
Bullet : .338, 250, Nosler AccuBond 57287
Useable Case Capaci: 84.107 grain H2O = 5.461 cm³
Cartridge O.A.L. L6: 3.600 inch = 91.44 mm
Barrel Length : 26.0 inch = 660.4 mm
Powder : IMR 7828

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 65.60 2302 2941 31755 8709 90.4 1.696
-18.0 89 67.24 2362 3096 33976 8990 91.8 1.649
-16.0 91 68.88 2422 3256 36361 9260 93.0 1.603
-14.0 94 70.52 2482 3421 38918 9517 94.2 1.553
-12.0 96 72.16 2543 3590 41673 9760 95.3 1.504
-10.0 98 73.80 2604 3763 44637 9987 96.2 1.456
-08.0 100 75.44 2664 3940 47828 10198 97.1 1.410
-06.0 102 77.08 2725 4121 51267 10390 97.8 1.366
-04.0 104 78.72 2785 4306 54962 10562 98.5 1.323
-02.0 107 80.36 2846 4495 58992 10714 99.0 1.282 ! Near Maximum !
+00.0 109 82.00 2906 4687 63347 10844 99.4 1.242 ! Near Maximum !
+02.0 111 83.64 2966 4883 68063 10951 99.7 1.203 !DANGEROUS LOAD-DO NOT USE!
+04.0 113 85.28 3025 5081 73189 11034 99.9 1.166 !DANGEROUS LOAD-DO NOT USE!
+06.0 115 86.92 3085 5282 78766 11092 100.0 1.130 !DANGEROUS LOAD-DO NOT USE!
+08.0 118 88.56 3144 5486 84854 11132 100.0 1.095 !DANGEROUS LOAD-DO NOT USE!
+10.0 120 90.20 3203 5693 91507 11166 100.0 1.062 !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 109 82.00 3035 5113 77309 10379 100.0 1.149 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 109 82.00 2720 4106 51224 10724 94.3 1.363


Hope that helps you out Don.

 

[salmonchaser]

Thanks Scotty, now I have to try and figure out the whole node thing.

 

[SJB358]

Don, get some speeds, associate them with the velocities achieved and we can probably tune you in fairly easily. Once you correlate them all, it won't take much to see where your nodes are.

 

[NWBlacktail]

Thanks Scotty, now I have to try and figure out the whole node thing.

:mrgreen:
It's easy. The nodes depends on barrel length.

So, for a 26" barrel, node 4 is 1.19 ms. Node 5 is 1.33 ms. So look at the column all the way to the right in those QuickLoad charts, and it gives you "B_Time.' That's what you are looking at.

 

[salmonchaser]

Scotty, finally have some velocity figures for 7828 and 250 grain Partition. 84 grains 7828 gives me an average of 2852 with sd of 14.
What should I learn from this information?

 

[SJB358]

Scotty, finally have some velocity figures for 7828 and 250 grain Partition. 84 grains 7828 gives me an average of 2852 with sd of 14.
What should I learn from this information?

Give me a minute. I'll check it out and get back.


Cartridge : .340 Weath. Mag.
Bullet : .338, 250, Nosler PART SP 35644
Useable Case Capaci: 88.071 grain H2O = 5.718 cm³
Cartridge O.A.L. L6: 3.675 inch = 93.35 mm
Barrel Length : 26.0 inch = 660.4 mm
Powder : IMR 7828

Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.298% 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

-03.0 103 81.50 2816 4401 55817 11067 98.8 1.309 ! Near Maximum !
-02.7 104 81.75 2825 4429 56395 11090 98.9 1.303 ! Near Maximum !
-02.4 104 82.00 2833 4457 56977 11113 99.0 1.297 ! Near Maximum !
-02.1 104 82.25 2842 4485 57567 11136 99.1 1.291 ! Near Maximum !
-01.8 105 82.50 2851 4513 58162 11158 99.1 1.285 ! Near Maximum !
-01.5 105 82.75 2860 4541 58767 11180 99.2 1.279 ! Near Maximum !
-01.2 105 83.00 2869 4569 59377 11201 99.3 1.273 ! Near Maximum !
-00.9 106 83.25 2878 4597 59990 11222 99.3 1.268 ! Near Maximum !
-00.6 106 83.50 2887 4625 60619 11242 99.4 1.262 ! Near Maximum !
-00.3 106 83.75 2895 4654 61250 11262 99.4 1.256 ! Near Maximum !
+00.0 106 84.00 2904 4682 61889 11281 99.5 1.250 ! Near Maximum !
+00.3 107 84.25 2913 4711 62536 11300 99.5 1.244 ! Near Maximum !
+00.6 107 84.50 2922 4739 63190 11318 99.6 1.239 !DANGEROUS LOAD-DO NOT USE!
+00.9 107 84.75 2931 4768 63852 11335 99.6 1.233 !DANGEROUS LOAD-DO NOT USE!
+01.2 108 85.00 2940 4797 64522 11352 99.7 1.227 !DANGEROUS LOAD-DO NOT USE!
+01.5 108 85.25 2948 4826 65197 11369 99.7 1.222 !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 84.00 3033 5105 75446 10810 100.0 1.156 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 106 84.00 2719 4105 50028 11156 94.4 1.372


Here are the nodes


26.0 0.8819 0.9661 1.1057 1.1905 1.3295 1.4149 1.5533

 

[SJB358]

To me, with undadjusted burn rates it looks like your sitting right between a node. Not sure though. Dewey or NWBlacktail could probably hone it in further.

 

[Dwh7271]

Cartridge          : .340 Weath. Mag.
Bullet             : .338, 250, Nosler PART RN 16338
Useable Case Capaci: 90.627 grain H2O = 5.884 cm³
Cartridge O.A.L. L6: 3.675 inch = 93.35 mm
Barrel Length      : 26.0 inch = 660.4 mm
Powder             : IMR 7828 ?

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% 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

-10.0   93    75.60   2571    3669   44429  10063     97.7    1.489
-09.0   94    76.44   2599    3751   45953  10157     98.1    1.467
-08.0   95    77.28   2628    3833   47528  10246     98.4    1.444
-07.0   96    78.12   2656    3915   49160  10331     98.7    1.422
-06.0   97    78.96   2684    3999   50852  10410     98.9    1.400
-05.0   98    79.80   2712    4083   52604  10485     99.2    1.379
-04.0   99    80.64   2740    4168   54423  10554     99.4    1.358  ! Near Maximum !
-03.0  100    81.48   2768    4253   56303  10618     99.6    1.338  ! Near Maximum !
-02.0  101    82.32   2796    4338   58265  10676     99.7    1.318  ! Near Maximum !
-01.0  102    83.16   2823    4425   60296  10729     99.8    1.298  ! Near Maximum !
+00.0  103    84.00   2851    4511   62404  10776     99.9    1.279  ! Near Maximum !
+01.0  105    84.84   2878    4599   64592  10817    100.0    1.260  !DANGEROUS LOAD-DO NOT USE!
+02.0  106    85.68   2905    4686   66866  10853    100.0    1.241  !DANGEROUS LOAD-DO NOT USE!
+03.0  107    86.52   2933    4774   69228  10883    100.0    1.223  !DANGEROUS LOAD-DO NOT USE!
+04.0  108    87.36   2960    4862   71683  10912    100.0    1.205  !DANGEROUS LOAD-DO NOT USE!
+05.0  109    88.20   2986    4951   74235  10940    100.0    1.187  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba    103    84.00   2914    4713   69058  10523    100.0    1.228  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba    103    84.00   2774    4270   56143  10901     98.8    1.336  ! Near Maximum !

 

[Dwh7271]

Should be one right about here

+00.0  101    81.90   2782    4296   57278  10648     99.6    1.328  ! Near Maximum !

 

[FOTIS]

OK fellas what exactly do you mean by the term NODE????????

 

[Dwh7271]

A simple explanation is that it is the point where the barrel flex is at its' least or at the same point in each shot. i.e. if the flex is up/down, the node would be the point where it might consistently hit the middle, therefore giving a predictable exit point with each shot.
If that helps?

Original paper:
http://www.the-long-family.com/OBT_paper.htm

 

[salmonchaser]

If I'm even close to understanding this if I slow her down a little I will find a more accurate, consistent load?

 

[SJB358]

That's what I'm getting as well Don.

 

[Dwh7271]

Yes, Don.

Should be around 81.9 gr.

 

[SJB358]

How do the nodes change with H1000 or maybe RL26? Just for grins. Seems 338 Win Mag like at 2700 and change.

 

[Dwh7271]

Cartridge          : .340 Weath. Mag.
Bullet             : .338, 250, Nosler PART SP 35644
Useable Case Capaci: 89.819 grain H2O = 5.832 cm³
Cartridge O.A.L. L6: 3.675 inch = 93.35 mm
Barrel Length      : 26.0 inch = 660.4 mm
Powder             : Alliant Reloder-26 ?

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% 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

-10.0   82    72.63   2582    3702   41363   9867    100.0    1.542
-09.0   83    73.44   2608    3777   42771   9924    100.0    1.518
-08.0   83    74.24   2634    3852   44222   9980    100.0    1.495
-07.0   84    75.05   2660    3927   45719  10036    100.0    1.473
-06.0   85    75.86   2685    4003   47264  10091    100.0    1.451
-05.0   86    76.67   2711    4079   48859  10145    100.0    1.429
-04.0   87    77.47   2736    4156   50505  10199    100.0    1.408
-03.0   88    78.28   2761    4233   52204  10252    100.0    1.387
-02.0   89    79.09   2786    4310   53958  10304    100.0    1.367
-01.0   90    79.89   2811    4387   55769  10355    100.0    1.347  ! Near Maximum !
+00.0   91    80.70   2836    4465   57638  10406    100.0    1.327  ! Near Maximum !
+01.0   92    81.51   2861    4544   59569  10456    100.0    1.308  ! Near Maximum !
+02.0   92    82.31   2886    4622   61564  10505    100.0    1.290  ! Near Maximum !
+03.0   93    83.12   2910    4701   63624  10553    100.0    1.271  !DANGEROUS LOAD-DO NOT USE!
+04.0   94    83.93   2935    4781   65752  10601    100.0    1.253  !DANGEROUS LOAD-DO NOT USE!
+05.0   95    84.74   2959    4861   67952  10647    100.0    1.235  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba     91    80.70   2888    4631   64338  10203    100.0    1.272  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba     91    80.70   2772    4264   51002  10652    100.0    1.392

On that one, it should be right at 80.7 gr or close

On this one around 87.1

Cartridge          : .340 Weath. Mag.
Bullet             : .338, 250, Nosler PART SP 35644
Useable Case Capaci: 89.819 grain H2O = 5.832 cm³
Cartridge O.A.L. L6: 3.675 inch = 93.35 mm
Barrel Length      : 26.0 inch = 660.4 mm
Powder             : Hodgdon H1000

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% 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

-10.0   96    78.39   2472    3391   38000   9901     94.5    1.566
-09.0   97    79.26   2502    3475   39324  10026     95.1    1.540
-08.0   98    80.13   2533    3561   40701  10146     95.6    1.514
-07.0   99    81.00   2563    3648   42131  10262     96.1    1.490
-06.0  100    81.87   2594    3735   43618  10373     96.6    1.465
-05.0  101    82.75   2625    3824   45166  10479     97.1    1.442
-04.0  102    83.62   2656    3915   46774  10580     97.5    1.418
-03.0  103    84.49   2686    4006   48448  10675     97.9    1.395
-02.0  104    85.36   2717    4098   50192  10765     98.2    1.372
-01.0  105    86.23   2748    4191   51989  10848     98.6    1.350
+00.0  106    87.10   2779    4286   53900  10926     98.8    1.328
+01.0  107    87.97   2809    4381   55872  10997     99.1    1.306  ! Near Maximum !
+02.0  108    88.84   2840    4478   57930  11063     99.3    1.285  ! Near Maximum !
+03.0  110    89.71   2871    4575   60078  11121     99.5    1.264  ! Near Maximum !
+04.0  111    90.58   2902    4674   62319  11172     99.7    1.244  ! Near Maximum !
+05.0  112    91.46   2932    4773   64662  11217     99.8    1.223  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba    106    87.10   2858    4534   59576  10788     99.9    1.272  ! Near Maximum !
Data for burning rate decreased by 5% relative to nominal value:
-Ba    106    87.10   2685    4001   48624  10862     96.2    1.392

 

[IdahoCTD]

It's funny to see all this info now. I have two 338 Baer's (almost the same as the Jarrett, probably less than 1/2gr capacity difference). The loads I shoot in the 27" barreled gun is 83grs of R-22, 84grs of 7828, and 88grs of H-1000 with 250gr Sierra's. I think the H-1000 load was the most accurate. I haven't shot either in probably 5 years or more. That is with fireformed Winchester 375 H&H brass. I had to dig through my shooting book to find them but I found a picture of the groups.

 

[Dwh7271]

Nice targets.
Maybe that 87.1 load will be good for him? :grin:

 

[salmonchaser]

I'll pick up some H 1000 this weekend, if I can find it. Thanks guys