2 Quickload requests, both 7mm Rem Mag

[pharmseller]

I'm thinking about transitioning to the Hornady ELD-X in my brother's T3 7mm Rem Mag. I bought a box each of 162 grain and 175 grain.

I use MagPro with the 160 AccuBond and Retumbo with 180 VLD Hunting. How do these powders fare with the 162 and 175 ELD-X?

Remington brass
WLRM
24" barrel
3.290" OAL



Thanks,



P

 

[Partisan]

Quickload doesn't have the ELD-X bullet data in it. At least my copy doesn't. However if you can measure the bullet's overall length, The diameter of the small end of the boat-tail and the length of the boat-tail , can maybe create the records. The BC also needed.

 

[Dwh7271]

Cartridge          : 7 mm Rem. Mag.(SAAMI)
Bullet             : .284, 175, Hornady ELD-X 2841
Useable Case Capaci: 69.647 grain H2O = 4.522 cm³
Cartridge O.A.L. L6: 3.290 inch = 83.57 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Hodgdon Retumbo

Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.882% 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

-08.8   98    62.98   2589    2604   39705  12320     98.8    1.496
-07.9   99    63.59   2616    2660   40927  12418     99.1    1.474
-07.1   99    64.20   2644    2717   42192  12510     99.3    1.452
-06.2  100    64.81   2672    2774   43499  12595     99.5    1.431
-05.3  101    65.41   2700    2832   44847  12673     99.7    1.411
-04.4  102    66.02   2727    2890   46250  12743     99.8    1.390
-03.5  103    66.63   2755    2949   47698  12806     99.9    1.370
-02.6  104    67.24   2782    3007   49197  12861    100.0    1.350
-01.8  105    67.85   2809    3067   50749  12908    100.0    1.331
-00.9  106    68.46   2836    3126   52356  12951    100.0    1.311  ! Near Maximum !
+00.0  107    69.07   2864    3186   54022  12992    100.0    1.292  ! Near Maximum !
+00.9  108    69.68   2891    3247   55747  13033    100.0    1.274  ! Near Maximum !
+01.8  109    70.29   2917    3307   57538  13072    100.0    1.255  ! Near Maximum !
+02.6  110    70.90   2944    3368   59392  13111    100.0    1.237  ! Near Maximum !
+03.5  111    71.51   2971    3429   61315  13149    100.0    1.219  !DANGEROUS LOAD-DO NOT USE!
+04.4  112    72.12   2997    3491   63312  13186    100.0    1.202  !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    107    69.07   2939    3357   60361  12676    100.0    1.234  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba    107    69.07   2768    2978   48259  13259     99.4    1.359

Cartridge          : 7 mm Rem. Mag.(SAAMI)
Bullet             : .284, 162, Hornady ELD-X 2840
Useable Case Capaci: 71.420 grain H2O = 4.637 cm³
Cartridge O.A.L. L6: 3.290 inch = 83.57 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Hodgdon Retumbo

Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.86% 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

-08.6   98    64.74   2651    2527   38526  12482     97.7    1.469
-07.7   99    65.35   2679    2582   39681  12596     98.1    1.448
-06.9  100    65.96   2708    2638   40873  12705     98.4    1.427
-06.0  101    66.57   2736    2693   42104  12806     98.7    1.408
-05.2  101    67.17   2765    2750   43378  12901     99.0    1.387
-04.3  102    67.78   2793    2807   44696  12990     99.3    1.367
-03.4  103    68.39   2822    2864   46058  13070     99.5    1.348
-02.6  104    69.00   2850    2922   47467  13144     99.7    1.329
-01.7  105    69.61   2878    2980   48924  13211     99.8    1.310
-00.9  106    70.22   2907    3039   50433  13270     99.9    1.291
+00.0  107    70.83   2935    3098   51993  13321    100.0    1.273  ! Near Maximum !
+00.9  108    71.44   2963    3157   53608  13365    100.0    1.255  ! Near Maximum !
+01.7  109    72.05   2991    3217   55283  13402    100.0    1.237  ! Near Maximum !
+02.6  110    72.66   3018    3277   57018  13438    100.0    1.219  ! Near Maximum !
+03.4  111    73.27   3046    3337   58815  13473    100.0    1.202  ! Near Maximum !
+04.3  112    73.88   3074    3398   60678  13507    100.0    1.185  !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    107    70.83   3020    3281   58016  12990    100.0    1.214  ! Near Maximum !
Data for burning rate decreased by 5% relative to nominal value:
-Ba    107    70.83   2829    2879   46503  13444     98.5    1.339

Cartridge          : 7 mm Rem. Mag.(SAAMI)
Bullet             : .284, 162, Hornady ELD-X 2840
Useable Case Capaci: 71.420 grain H2O = 4.637 cm³
Cartridge O.A.L. L6: 3.290 inch = 83.57 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 0.897% 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

-09.0   88    61.80   2673    2569   41842  12308     92.9    1.434
-08.1   89    62.41   2701    2624   43139  12453     93.4    1.414
-07.2   90    63.02   2730    2681   44471  12595     93.9    1.393
-06.3   91    63.63   2759    2737   45840  12733     94.4    1.373
-05.4   92    64.23   2787    2795   47248  12868     94.8    1.354
-04.5   93    64.84   2816    2853   48701  13000     95.3    1.335
-03.6   94    65.45   2845    2911   50199  13128     95.7    1.316
-02.7   94    66.06   2874    2970   51745  13252     96.1    1.297
-01.8   95    66.67   2902    3030   53339  13372     96.5    1.279  ! Near Maximum !
-00.9   96    67.28   2931    3091   54985  13487     96.9    1.261  ! Near Maximum !
+00.0   97    67.89   2960    3152   56683  13599     97.2    1.243  ! Near Maximum !
+00.9   98    68.50   2989    3213   58436  13706     97.6    1.226  ! Near Maximum !
+01.8   99    69.11   3018    3275   60245  13809     97.9    1.208  ! Near Maximum !
+02.7  100    69.72   3046    3338   62114  13907     98.2    1.192  !DANGEROUS LOAD-DO NOT USE!
+03.6  100    70.33   3075    3401   64044  14000     98.4    1.175  !DANGEROUS LOAD-DO NOT USE!
+04.5  101    70.94   3104    3465   66037  14089     98.7    1.159  !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     97    67.89   3048    3341   62854  13623     99.2    1.188  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba     97    67.89   2859    2940   50632  13376     94.1    1.306

Cartridge          : 7 mm Rem. Mag.(SAAMI)
Bullet             : .284, 175, Hornady ELD-X 2841
Useable Case Capaci: 69.647 grain H2O = 4.522 cm³
Cartridge O.A.L. L6: 3.290 inch = 83.57 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 0.93% 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

-09.3   87    59.43   2575    2576   41732  12069     93.8    1.485
-08.4   88    60.04   2603    2633   43043  12211     94.3    1.464
-07.4   89    60.65   2631    2690   44391  12350     94.8    1.443
-06.5   90    61.26   2659    2748   45782  12486     95.3    1.421
-05.6   91    61.86   2687    2806   47217  12618     95.7    1.401
-04.6   92    62.47   2716    2866   48698  12746     96.1    1.380
-03.7   92    63.08   2744    2925   50225  12870     96.5    1.360
-02.8   93    63.69   2772    2986   51801  12990     96.9    1.341
-01.9   94    64.30   2800    3047   53428  13106     97.3    1.321  ! Near Maximum !
-00.9   95    64.91   2828    3108   55107  13217     97.6    1.303  ! Near Maximum !
+00.0   96    65.52   2857    3171   56841  13324     97.9    1.284  ! Near Maximum !
+00.9   97    66.13   2885    3233   58631  13427     98.2    1.266  ! Near Maximum !
+01.9   98    66.74   2913    3297   60479  13524     98.5    1.247  !DANGEROUS LOAD-DO NOT USE!
+02.8   99    67.35   2941    3361   62388  13617     98.7    1.230  !DANGEROUS LOAD-DO NOT USE!
+03.7  100    67.96   2969    3425   64361  13705     98.9    1.212  !DANGEROUS LOAD-DO NOT USE!
+04.6  100    68.57   2997    3490   66399  13787     99.2    1.195  !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     96    65.52   2938    3354   62954  13291     99.5    1.228  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba     96    65.52   2762    2965   50852  13162     95.1    1.348

 

[pharmseller]

Perfect, thanks!




P

 

[pharmseller]

Looks like the 175 isn't optimal since the Tikka is twisted 9.5, the 175 wants 8.5. The good news, the 162 wants 9.5, so I'm starting there. I'm hoping for accuracy at 3,000 fps MV.




P

 

[truck driver]

Is 1-9.5" twist standard in most 7mm Rem?

 

[SJB358]

Is 1-9.5" twist standard in most 7mm Rem?

Yup. 9.5 and some being 9.25.

Looks like excellent speeds with Retumbo. That 162 should fly nice at over 3K.

 

[truck driver]

Scotty do you know what Winchester twisted the M70 at? Curiosity killed the cat and I'm wondering when it will catch up to me :lol:

 

[SJB358]

9.5 is what mine have been twisted at Rodger. It'll shoot 175 Partitions just fine. Probably not the 175 ABLRS or long match types.

 

[DrMike]

My 7 RM (New Haven manufacture) is a 10 twist. It does stabilize the heavier bullets quite well. I don't know how it would do with some of the newer heavies produced by Berger or even with the ABLR.

 

[sask boy]

I believe my buddies and my nephew's 7mm mag are both 1-10" twists but I am going to look up to confirm. My nephew's CDL shoot that 168gr. ABLRs very well using RL22.

PS. Just looked up my Nephew's CDL and it states they have 1-9.25" twist and I am still trying to find out the twist on my Buddies Krico.

Blessings,
Dan

 

[pharmseller]

I loaded 3 each last night, 3.291" with 70 grains MagPro, 3.294" with 71 grains Retumbo. The Retumbo load with those loooong bullets is compressed. I'm gonna shoot them over the chrono and check the cases for pressure. I'll post my results. Maybe a range day this weekend.

FYI, Hornady data for MagPro exceeds Quickload.



P

 

[truck driver]

My 7 RM (New Haven manufacture) is a 10 twist. It does stabilize the heavier bullets quite well. I don't know how it would do with some of the newer heavies produced by Berger or even with the ABLR.

Mine is a New Haven push feed guess I'll have to stick a patch on a jag and measure it.

 

[rootie3]

I've got an older rem 700, 1-9.5 twist and it loves the 175gr partitions...

Larry

 

[DrMike]

Welcome aboard, rootie3. The old 9.5 twist Remington's could deliver some excellent accuracy. One of my favourite loads is a 175 grain Partition charged with H870. Of course, H870 is no longer manufactured, but I have a good supply laid in to last me for some time to come. Again, welcome aboard.

 

[CDNhunter]

RL26 works great in my ridgeline I just picked up . Gun has a 26" BBL and I am getting 3037 fps with 69gr of 26 with the 162 eldx. I shot it out to 710 yards the other day.

 

[SJB358]

RL26 has been amazing in quite a few cartridges. If you've got it I would try it!