Load Specifications
Load data in caliber .375 H&H Mag. with .375 | 235gr | Speer Hot-Cor bullet and 92 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, Hodgdon CFE223 and ReloadSwiss RS 52.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 90% | 55,463 psi | 89% | 2736 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 55,724 psi | 89% | 2828 fps | 98.7% |
| Accurate 2460 | <<locked>> | 86% | 53,925 psi | 86% | 2756 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 56,173 psi | 90% | 2795 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 55,622 psi | 89% | 2818 fps | 100% |
| Accurate 4064 | <<locked>> | 98% | 55,651 psi | 89% | 2831 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 44,411 psi | 71% | 2717 fps | 96.3% |
| Accurate LT-30 | <<locked>> | 84% | 55,419 psi | 89% | 2684 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 55,825 psi | 90% | 2707 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 54,491 psi | 87% | 2815 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 98% | 55,259 psi | 89% | 2808 fps | 98.7% |
| ADI AR 2219 | <<locked>> | 84% | 55,999 psi | 90% | 2802 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 53,838 psi | 86% | 2776 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 90% | 53,345 psi | 86% | 2766 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 55,390 psi | 89% | 2881 fps | 99.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 53,896 psi | 86% | 2917 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 54,636 psi | 88% | 2831 fps | 99.6% |
| Alliant Reloder-10x | <<locked>> | 86% | 55,332 psi | 89% | 2743 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 55,390 psi | 89% | 2851 fps | 98.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 44,701 psi | 72% | 2723 fps | 96.3% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 51,474 psi | 83% | 2881 fps | 99.2% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 54,549 psi | 87% | 2680 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 54,143 psi | 87% | 2828 fps | 98.3% |
| Bofors RP3 | <<locked>> | 98% | 54,824 psi | 88% | 2844 fps | 99.7% |
| Hodgdon Benchmark | <<locked>> | 90% | 56,057 psi | 90% | 2766 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 92% | 56,130 psi | 90% | 2854 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 88% | 54,230 psi | 87% | 2894 fps | 98.8% |
| Hodgdon H322 | <<locked>> | 86% | 54,563 psi | 87% | 2782 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 55,738 psi | 89% | 2808 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 53,040 psi | 85% | 2802 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 92% | 54,998 psi | 88% | 2831 fps | 99.5% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 40,843 psi | 65% | 2615 fps | 97% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 53,519 psi | 86% | 2858 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,505 psi | 55% | 1686 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 56,391 psi | 90% | 2831 fps | 99.6% |
| IMR 3031 | <<locked>> | 92% | 53,896 psi | 86% | 2822 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 54,824 psi | 88% | 2792 fps | 98.8% |
| IMR 4198 | <<locked>> | 86% | 55,912 psi | 90% | 2707 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 42,656 psi | 68% | 2664 fps | 95.9% |
| IMR 4895 | <<locked>> | 94% | 53,447 psi | 86% | 2835 fps | 99.1% |
| IMR 8208 XBR | <<locked>> | 90% | 53,838 psi | 86% | 2776 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 86% | 53,983 psi | 87% | 2766 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 92% | 53,432 psi | 86% | 2799 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 54,824 psi | 88% | 2753 fps | 99.2% |
| Lovex S062 | <<locked>> | 96% | 54,273 psi | 87% | 2795 fps | 99.7% |
| Lovex S065ᴾ | <<locked>> | 100% | 50,067 psi | 80% | 2723 fps | 96% |
| Norma 200 | <<locked>> | 82% | 55,347 psi | 89% | 2717 fps | 100% |
| Norma 201 | <<locked>> | 92% | 53,214 psi | 85% | 2766 fps | 99.7% |
| Norma 202 | <<locked>> | 92% | 53,563 psi | 86% | 2776 fps | 100% |
| Norma 203B | <<locked>> | 96% | 54,491 psi | 87% | 2838 fps | 99.2% |
| Norma URPᴾ | <<locked>> | 100% | 44,643 psi | 72% | 2713 fps | 96.1% |
| Ramshot Big Game | <<locked>> | 96% | 55,085 psi | 88% | 2867 fps | 99.1% |
| Ramshot TAC | <<locked>> | 90% | 54,592 psi | 88% | 2785 fps | 97.1% |
| Ramshot Wild Boar | <<locked>> | 90% | 53,563 psi | 86% | 2808 fps | 99% |
| Ramshot X-Terminator | <<locked>> | 88% | 55,303 psi | 89% | 2779 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,766 psi | 56% | 1726 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 53,635 psi | 86% | 2766 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 53,809 psi | 86% | 2782 fps | 95.9% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 55,347 psi | 89% | 2917 fps | 98.9% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 55,056 psi | 88% | 2949 fps | 100% |
| Rottweil R 901 | <<locked>> | 90% | 54,375 psi | 87% | 2759 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 53,534 psi | 86% | 2762 fps | 99.7% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 54,433 psi | 87% | 2831 fps | 99.5% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 50,067 psi | 80% | 2723 fps | 96% |
| Shooters World Match Rifle | <<locked>> | 92% | 53,432 psi | 86% | 2799 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 54,273 psi | 87% | 2795 fps | 99.7% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 53,548 psi | 86% | 2733 fps | 99.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 55,854 psi | 90% | 2444 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 56,362 psi | 90% | 2812 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 52,924 psi | 85% | 2841 fps | 98.9% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 53,040 psi | 85% | 2720 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 56,130 psi | 90% | 2815 fps | 97.8% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 56,405 psi | 90% | 2838 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 55,637 psi | 89% | 2720 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 54,955 psi | 88% | 2713 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 55,114 psi | 88% | 2812 fps | 99.9% |
| Somchem S335 | <<locked>> | 92% | 54,462 psi | 87% | 2720 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 55,434 psi | 89% | 2808 fps | 99.1% |
| Somchem S355ᴾ | <<locked>> | 100% | 55,245 psi | 89% | 2831 fps | 99.5% |
| Somchem S365ᴾ | <<locked>> | 100% | 39,842 psi | 64% | 2661 fps | 98.2% |
| Vihtavuori N130 | <<locked>> | 88% | 55,434 psi | 89% | 2694 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 55,477 psi | 89% | 2710 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 55,796 psi | 89% | 2782 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 54,085 psi | 87% | 2756 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 53,301 psi | 85% | 2766 fps | 99.8% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 47,224 psi | 76% | 2720 fps | 96.6% |
| Vihtavuori N530 | <<locked>> | 90% | 54,433 psi | 87% | 2776 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 96% | 55,724 psi | 89% | 2799 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 46,151 psi | 74% | 2723 fps | 96.3% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 48,588 psi | 78% | 2710 fps | 98.7% |
| Winchester 748 | <<locked>> | 90% | 53,417 psi | 86% | 2822 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 94% | 56,086 psi | 90% | 2848 fps | 99.6% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 40,756 psi | 65% | 2510 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 52,127 psi | 84% | 2769 fps | 98.2% |
| Accurate 2460 | <<locked>> | 80% | 44,193 psi | 71% | 2605 fps | 99.7% |
| Accurate 2495 | <<locked>> | 80% | 33,257 psi | 53% | 2415 fps | 99.9% |
| Accurate 2520 | <<locked>> | 80% | 39,479 psi | 63% | 2552 fps | 99% |
| Accurate 4064 | <<locked>> | 80% | 31,444 psi | 50% | 2392 fps | 98.1% |
| Accurate 4350 | <<locked>> | 98% | 41,379 psi | 66% | 2661 fps | 95.4% |
| Accurate LT-30 | <<locked>> | 80% | 49,139 psi | 79% | 2595 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 49,516 psi | 79% | 2612 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 80% | 37,304 psi | 60% | 2500 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 86% | 38,464 psi | 62% | 2507 fps | 95.1% |
| ADI AR 2219 | <<locked>> | 80% | 49,037 psi | 79% | 2703 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,320 psi | 63% | 2520 fps | 97.5% |
| Alliant AR-Comp | <<locked>> | 80% | 38,189 psi | 61% | 2533 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 45,353 psi | 73% | 2713 fps | 98.3% |
| Alliant Power Pro 2000-MR | 72.1 gr | 86% | 41,162 psi | 66% | 2674 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 32,895 psi | 53% | 2425 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 46,209 psi | 74% | 2612 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 37,942 psi | 61% | 2536 fps | 95.1% |
| Alliant Reloder-16 | <<locked>> | 98% | 42,148 psi | 68% | 2671 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 90% | 37,101 psi | 59% | 2592 fps | 95.7% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 48,008 psi | 77% | 2589 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 41,423 psi | 66% | 2605 fps | 95.5% |
| Bofors RP3 | <<locked>> | 84% | 34,374 psi | 55% | 2470 fps | 95.8% |
| Hodgdon Benchmark | <<locked>> | 80% | 41,510 psi | 67% | 2523 fps | 98.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,304 psi | 60% | 2530 fps | 97.6% |
| Hodgdon CFE223 | 68.6 gr | 80% | 41,002 psi | 66% | 2654 fps | 96.1% |
| Hodgdon H322 | <<locked>> | 80% | 44,889 psi | 72% | 2635 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 45,614 psi | 73% | 2654 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 90% | 43,584 psi | 70% | 2638 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 37,579 psi | 60% | 2513 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 36,158 psi | 58% | 2510 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,692 psi | 54% | 2470 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,599 psi | 41% | 1503 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,216 psi | 58% | 2467 fps | 95.8% |
| IMR 3031 | <<locked>> | 80% | 36,390 psi | 58% | 2523 fps | 99.8% |
| IMR 4064 | <<locked>> | 84% | 37,942 psi | 61% | 2490 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 46,760 psi | 75% | 2579 fps | 100% |
| IMR 4831 | <<locked>> | 98% | 39,914 psi | 64% | 2612 fps | 95% |
| IMR 4895 | <<locked>> | 82% | 36,332 psi | 58% | 2513 fps | 95.4% |
| IMR 8208 XBR | <<locked>> | 80% | 39,320 psi | 63% | 2520 fps | 97.5% |
| Lovex D073.5 | <<locked>> | 80% | 43,918 psi | 70% | 2605 fps | 99.1% |
| Lovex D073.6 | <<locked>> | 80% | 35,679 psi | 57% | 2487 fps | 98.2% |
| Lovex S060 | <<locked>> | 80% | 38,174 psi | 61% | 2454 fps | 95.9% |
| Lovex S062 | <<locked>> | 80% | 33,025 psi | 53% | 2395 fps | 95.7% |
| Lovex S065 | <<locked>> | 98% | 47,021 psi | 75% | 2671 fps | 95.2% |
| Norma 200 | <<locked>> | 80% | 52,083 psi | 84% | 2674 fps | 100% |
| Norma 201 | <<locked>> | 80% | 36,738 psi | 59% | 2464 fps | 96.9% |
| Norma 202 | <<locked>> | 80% | 36,637 psi | 59% | 2480 fps | 98.9% |
| Norma 203B | <<locked>> | 84% | 37,260 psi | 60% | 2526 fps | 95.6% |
| Norma URP | <<locked>> | 98% | 41,974 psi | 67% | 2661 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 84% | 36,811 psi | 59% | 2533 fps | 95.1% |
| Ramshot TAC | <<locked>> | 86% | 47,877 psi | 77% | 2677 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 38,348 psi | 61% | 2533 fps | 95.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 42,728 psi | 69% | 2569 fps | 96.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,788 psi | 41% | 1539 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 44,251 psi | 71% | 2612 fps | 99.4% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 50,314 psi | 81% | 2726 fps | 95.2% |
| ReloadSwiss RS 52 | 68.2 gr | 84% | 39,160 psi | 63% | 2628 fps | 95.5% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 30,501 psi | 49% | 2428 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 40,422 psi | 65% | 2523 fps | 99.3% |
| Rottweil R 902 | <<locked>> | 80% | 34,940 psi | 56% | 2418 fps | 96.3% |
| Rottweil R 903 | <<locked>> | 86% | 34,418 psi | 55% | 2464 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 98% | 47,021 psi | 75% | 2671 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,679 psi | 57% | 2487 fps | 98.2% |
| Shooters World Precision | <<locked>> | 80% | 33,025 psi | 53% | 2395 fps | 95.7% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 46,644 psi | 75% | 2625 fps | 98.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 53,229 psi | 85% | 2411 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 49,516 psi | 79% | 2710 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 38,305 psi | 61% | 2572 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 46,789 psi | 75% | 2625 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 45,629 psi | 73% | 2648 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 35,969 psi | 58% | 2470 fps | 95% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,348 psi | 61% | 2441 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,415 psi | 50% | 2303 fps | 98.5% |
| Somchem S321 | <<locked>> | 80% | 42,105 psi | 68% | 2595 fps | 98.4% |
| Somchem S335 | <<locked>> | 80% | 37,869 psi | 61% | 2444 fps | 99.5% |
| Somchem S341 | <<locked>> | 80% | 36,811 psi | 59% | 2480 fps | 95.2% |
| Somchem S355 | <<locked>> | 86% | 35,636 psi | 57% | 2477 fps | 95.6% |
| Somchem S365 | <<locked>> | 94% | 32,996 psi | 53% | 2500 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 80% | 43,511 psi | 70% | 2520 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 38,435 psi | 62% | 2444 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,634 psi | 54% | 2415 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 34,708 psi | 56% | 2421 fps | 98.8% |
| Vihtavuori N150 | <<locked>> | 84% | 31,792 psi | 51% | 2369 fps | 95.8% |
| Vihtavuori N160 | <<locked>> | 96% | 41,408 psi | 66% | 2612 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 39,175 psi | 63% | 2516 fps | 97.6% |
| Vihtavuori N540 | <<locked>> | 80% | 33,286 psi | 53% | 2402 fps | 98% |
| Vihtavuori N550 | <<locked>> | 98% | 43,236 psi | 69% | 2667 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 37,289 psi | 60% | 2493 fps | 95.9% |
| Winchester 748 | <<locked>> | 80% | 38,116 psi | 61% | 2552 fps | 98.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 35,056 psi | 56% | 2470 fps | 95.5% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 110 powders for .375 H&H Mag. loaded with the .375 | 235gr | Speer Hot-Cor. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,949 fps; across all powders the maximum-charge window runs from 1,686 fps to 2,949 fps. Accurate 4350 gives the best case fill at 100 %, and 110 of the 110 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. Alliant Power Pro 2000-MR, Hodgdon CFE223, ReloadSwiss RS 52 rank at the top here: for .375 H&H Mag. with the .375 | 235gr | Speer Hot-Cor they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Alliant Reloder-23, Bofors RP7 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.