375 H&H loading question

[Guy Miner]

For a decade I've used 69 grains of RL-15 with the 260 grain Nosler AccuBond for 2650 fps & good accuracy.

Right now I'm short on RL-15 and long on Varget.

In the past I've used RL-15 and Varget at similar powder charges to produce great 308 Winchester loads. They seemed nearly the same. I don't know if that means anything re the 375 H&H though.

Suppose I could use Varget to built good 375 H&H ammo?

Thanks!

 

[Guy Miner]

Hmmm, answered my own question with a quick look at the Hornady manual. They show Varget with 250, 270 and 300 grain loads.

 

[SJB358]

I don’t think you’d see much, If any difference Guy. They usually run the same in about any cartridge.

Cartridge : .375 H.& H. Mag.
Bullet : .375, 260, Nosler AccuBond 54413
Useable Case Capaci: 77.778 grain H2O = 5.050 cm³
Cartridge O.A.L. L6: 3.600 inch = 91.44 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Hodgdon VARGET

Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.654% 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

-06.5 93 64.49 2523 3676 47120 7631 97.9 1.272
-05.9 94 64.94 2539 3723 48045 7677 98.1 1.260
-05.2 94 65.39 2555 3769 48989 7723 98.2 1.249
-04.6 95 65.84 2571 3817 49951 7767 98.4 1.238
-03.9 96 66.29 2587 3864 50932 7810 98.6 1.228
-03.3 96 66.75 2603 3911 51933 7853 98.7 1.217
-02.6 97 67.20 2619 3959 52953 7894 98.8 1.207
-02.0 98 67.65 2635 4007 53993 7935 99.0 1.196 ! Near Maximum !
-01.3 98 68.10 2650 4055 55054 7974 99.1 1.186 ! Near Maximum !
-00.7 99 68.55 2666 4104 56136 8012 99.2 1.176 ! Near Maximum !
+00.0 99 69.00 2682 4152 57239 8049 99.3 1.166 ! Near Maximum !
+00.7 100 69.45 2697 4201 58365 8085 99.4 1.156 ! Near Maximum !
+01.3 101 69.90 2713 4250 59514 8120 99.5 1.146 ! Near Maximum !
+02.0 101 70.35 2729 4299 60685 8154 99.6 1.137 ! Near Maximum !
+02.6 102 70.80 2744 4348 61880 8186 99.7 1.127 !DANGEROUS LOAD-DO NOT USE!
+03.3 103 71.25 2760 4398 63100 8218 99.7 1.118 !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 69.00 2780 4463 66938 7805 100.0 1.094 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 99 69.00 2544 3737 47730 7957 95.1 1.260


Cartridge : .375 H.& H. Mag.
Bullet : .375, 260, Nosler AccuBond 54413
Useable Case Capaci: 77.778 grain H2O = 5.050 cm³
Cartridge O.A.L. L6: 3.600 inch = 91.44 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-15

Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.654% 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

-06.5 90 64.49 2537 3717 45681 7921 97.9 1.296
-05.9 91 64.94 2554 3765 46590 7968 98.0 1.285
-05.2 91 65.39 2570 3813 47516 8014 98.2 1.273
-04.6 92 65.84 2586 3861 48460 8059 98.4 1.262
-03.9 92 66.29 2602 3910 49423 8103 98.5 1.251
-03.3 93 66.75 2619 3959 50405 8146 98.7 1.240
-02.6 94 67.20 2635 4008 51406 8188 98.8 1.229
-02.0 94 67.65 2651 4057 52426 8228 99.0 1.218
-01.3 95 68.10 2667 4107 53467 8268 99.1 1.207 ! Near Maximum !
-00.7 96 68.55 2683 4157 54528 8306 99.2 1.197 ! Near Maximum !
+00.0 96 69.00 2699 4207 55610 8343 99.3 1.186 ! Near Maximum !
+00.7 97 69.45 2715 4257 56714 8379 99.4 1.176 ! Near Maximum !
+01.3 97 69.90 2731 4307 57840 8413 99.5 1.166 ! Near Maximum !
+02.0 98 70.35 2747 4358 58988 8447 99.6 1.156 ! Near Maximum !
+02.6 99 70.80 2763 4408 60160 8479 99.7 1.146 ! Near Maximum !
+03.3 99 71.25 2779 4459 61355 8509 99.7 1.136 ! Near Maximum !

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 96 69.00 2806 4545 65963 8049 100.0 1.106 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 96 69.00 2549 3751 45531 8263 94.8 1.293

 

[Guy Miner]

Oh - thanks for running that Scotty!

Ya, I wasn't seeing Varget and the 375 H&H in many manuals, or online... But, a quick look at the Hornady manual reassured me. I've got a bunch of Hornady bullets in 375 also.

Guy

 

[SJB358]

I can’t see it being anything but just as good if not better due to a little better temperature stability.

 

[Guy Miner]

I shall give it a try and report back!

 

[salmonchaser]

GlD I saw this, found some Varget in my cabinet now I’ll die something with it!


Sent from my iPhone using Tapatalk

 

[Guy Miner]

Cool.

The Varget loads in the Hornady manual look pretty good.

Guy