Load Specifications
Load data in caliber .375 H&H Mag. with .375 | 245gr | Reichenberg HDB Universal bullet and 90 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.
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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>> | 92% | 55,056 psi | 88% | 2651 fps | 100% |
| Accurate 2200 | <<locked>> | 84% | 55,912 psi | 90% | 2743 fps | 98.6% |
| Accurate 2230 | <<locked>> | 82% | 52,997 psi | 85% | 2700 fps | 98.5% |
| Accurate 2460 | <<locked>> | 88% | 53,577 psi | 86% | 2674 fps | 100% |
| Accurate 2495 | <<locked>> | 98% | 54,723 psi | 88% | 2700 fps | 100% |
| Accurate 2520 | <<locked>> | 92% | 54,853 psi | 88% | 2726 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 54,201 psi | 87% | 2733 fps | 100% |
| Accurate LT-30 | <<locked>> | 86% | 55,898 psi | 90% | 2605 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 56,333 psi | 90% | 2628 fps | 100% |
| ADI AR 2206H | <<locked>> | 94% | 54,244 psi | 87% | 2730 fps | 99% |
| ADI AR 2207 | <<locked>> | 82% | 53,925 psi | 86% | 2585 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 55,158 psi | 88% | 2723 fps | 98.6% |
| ADI AR 2219 | <<locked>> | 86% | 56,202 psi | 90% | 2723 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 53,722 psi | 86% | 2690 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 94% | 56,304 psi | 90% | 2723 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 88% | 55,013 psi | 88% | 2792 fps | 99.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 53,548 psi | 86% | 2825 fps | 98.3% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 53,766 psi | 86% | 2740 fps | 99.5% |
| Alliant Reloder-10x | <<locked>> | 88% | 55,230 psi | 89% | 2661 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 98% | 55,013 psi | 88% | 2762 fps | 98.8% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 47,805 psi | 77% | 2733 fps | 98.6% |
| Alliant Reloder-7 | <<locked>> | 82% | 54,723 psi | 88% | 2598 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 54,940 psi | 88% | 2605 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 53,795 psi | 86% | 2740 fps | 98.2% |
| Bofors RP3ᴾ | <<locked>> | 100% | 53,983 psi | 87% | 2753 fps | 99.6% |
| Hodgdon Benchmark | <<locked>> | 92% | 56,202 psi | 90% | 2684 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 94% | 55,724 psi | 89% | 2769 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 90% | 53,809 psi | 86% | 2802 fps | 98.7% |
| Hodgdon H322 | <<locked>> | 88% | 54,418 psi | 87% | 2700 fps | 100% |
| Hodgdon H335 | <<locked>> | 88% | 55,753 psi | 89% | 2726 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 56,101 psi | 90% | 2762 fps | 97.9% |
| Hodgdon H4198 | <<locked>> | 82% | 54,520 psi | 87% | 2608 fps | 100% |
| Hodgdon H4895 | <<locked>> | 94% | 54,665 psi | 88% | 2743 fps | 99.4% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 37,623 psi | 60% | 2474 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 52,924 psi | 85% | 2766 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,069 psi | 55% | 1614 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 56,391 psi | 90% | 2746 fps | 99.5% |
| IMR 3031 | <<locked>> | 94% | 53,490 psi | 86% | 2733 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 54,679 psi | 88% | 2707 fps | 98.7% |
| IMR 4198 | <<locked>> | 88% | 56,014 psi | 90% | 2625 fps | 100% |
| IMR 4895 | <<locked>> | 98% | 56,376 psi | 90% | 2795 fps | 99.3% |
| IMR 8208 XBR | <<locked>> | 92% | 53,722 psi | 86% | 2690 fps | 99.6% |
| Lovex D073.4 | <<locked>> | 82% | 53,534 psi | 86% | 2680 fps | 100% |
| Lovex D073.5 | <<locked>> | 88% | 53,432 psi | 86% | 2680 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 96% | 56,304 psi | 90% | 2756 fps | 100% |
| Lovex S060 | <<locked>> | 94% | 54,882 psi | 88% | 2667 fps | 99.1% |
| Lovex S062 | <<locked>> | 98% | 53,505 psi | 86% | 2703 fps | 99.7% |
| Norma 200 | <<locked>> | 84% | 55,056 psi | 88% | 2635 fps | 100% |
| Norma 201 | <<locked>> | 96% | 56,101 psi | 90% | 2726 fps | 99.8% |
| Norma 202 | <<locked>> | 94% | 52,982 psi | 85% | 2687 fps | 100% |
| Norma 203B | <<locked>> | 98% | 54,056 psi | 87% | 2749 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 98% | 54,578 psi | 88% | 2776 fps | 99% |
| Ramshot TAC | <<locked>> | 92% | 54,433 psi | 87% | 2700 fps | 96.9% |
| Ramshot Wild Boar | <<locked>> | 92% | 53,272 psi | 85% | 2723 fps | 98.9% |
| Ramshot X-Terminator | <<locked>> | 90% | 55,216 psi | 89% | 2694 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,084 psi | 55% | 1647 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 53,461 psi | 86% | 2680 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 54,636 psi | 88% | 2825 fps | 98.8% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 51,169 psi | 82% | 2805 fps | 100% |
| Rottweil R 901 | <<locked>> | 92% | 53,679 psi | 86% | 2671 fps | 100% |
| Rottweil R 902 | <<locked>> | 98% | 56,304 psi | 90% | 2720 fps | 99.8% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 49,937 psi | 80% | 2684 fps | 99% |
| Shooters World AR Plus | <<locked>> | 82% | 53,534 psi | 86% | 2680 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 96% | 56,304 psi | 90% | 2756 fps | 100% |
| Shooters World Precision | <<locked>> | 98% | 53,505 psi | 86% | 2703 fps | 99.7% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 53,708 psi | 86% | 2654 fps | 99.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 53,708 psi | 86% | 2343 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 56,376 psi | 90% | 2730 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 52,431 psi | 84% | 2753 fps | 98.8% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 56,347 psi | 90% | 2680 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 94% | 55,767 psi | 89% | 2726 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 96% | 56,159 psi | 90% | 2753 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 55,332 psi | 89% | 2635 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 54,810 psi | 88% | 2631 fps | 100% |
| Somchem S321 | <<locked>> | 90% | 54,868 psi | 88% | 2726 fps | 99.8% |
| Somchem S335 | <<locked>> | 94% | 54,186 psi | 87% | 2635 fps | 100% |
| Somchem S341 | <<locked>> | 94% | 55,085 psi | 88% | 2723 fps | 99% |
| Somchem S355ᴾ | <<locked>> | 100% | 50,937 psi | 82% | 2687 fps | 99% |
| Somchem S365ᴾ | <<locked>> | 100% | 36,390 psi | 58% | 2513 fps | 97.1% |
| Vihtavuori N120 | <<locked>> | 82% | 53,809 psi | 86% | 2536 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 55,332 psi | 89% | 2612 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 55,100 psi | 88% | 2625 fps | 100% |
| Vihtavuori N135 | <<locked>> | 98% | 55,187 psi | 88% | 2694 fps | 100% |
| Vihtavuori N140 | <<locked>> | 96% | 53,505 psi | 86% | 2667 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 49,313 psi | 79% | 2631 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 92% | 54,244 psi | 87% | 2690 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 98% | 55,245 psi | 89% | 2713 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 45,020 psi | 72% | 2569 fps | 97.9% |
| Winchester 748 | <<locked>> | 92% | 52,997 psi | 85% | 2736 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 96% | 55,709 psi | 89% | 2762 fps | 99.5% |
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% | 37,739 psi | 61% | 2385 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 49,052 psi | 79% | 2635 fps | 97.6% |
| Accurate 2230 | <<locked>> | 80% | 49,269 psi | 79% | 2641 fps | 97.9% |
| Accurate 2460 | <<locked>> | 80% | 40,712 psi | 65% | 2470 fps | 99.4% |
| Accurate 2495 | <<locked>> | 80% | 29,660 psi | 48% | 2277 fps | 99.4% |
| Accurate 2520 | <<locked>> | 80% | 35,969 psi | 58% | 2418 fps | 98.3% |
| Accurate 4064 | <<locked>> | 80% | 28,108 psi | 45% | 2254 fps | 97% |
| Accurate LT-30 | <<locked>> | 80% | 46,470 psi | 75% | 2474 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 46,833 psi | 75% | 2490 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 82% | 36,854 psi | 59% | 2421 fps | 95.4% |
| ADI AR 2207 | <<locked>> | 80% | 50,560 psi | 81% | 2539 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 40,393 psi | 65% | 2474 fps | 95.6% |
| ADI AR 2219 | <<locked>> | 80% | 45,759 psi | 73% | 2572 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 36,637 psi | 59% | 2395 fps | 96.7% |
| Alliant AR-Comp | <<locked>> | 80% | 35,041 psi | 56% | 2408 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 42,105 psi | 68% | 2575 fps | 97.6% |
| Alliant Power Pro 2000-MR | 68.1 gr | 88% | 40,959 psi | 66% | 2592 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 34,243 psi | 55% | 2392 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 43,033 psi | 69% | 2487 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 39,813 psi | 64% | 2503 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 92% | 36,564 psi | 59% | 2507 fps | 95.3% |
| Alliant Reloder-7 | <<locked>> | 80% | 51,445 psi | 82% | 2556 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 45,266 psi | 73% | 2470 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 41,118 psi | 66% | 2526 fps | 95.3% |
| Bofors RP3 | <<locked>> | 86% | 33,373 psi | 54% | 2385 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 38,885 psi | 62% | 2398 fps | 97.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 34,330 psi | 55% | 2398 fps | 96.7% |
| Hodgdon CFE223 | 64.9 gr | 82% | 40,669 psi | 65% | 2575 fps | 95.9% |
| Hodgdon H322 | <<locked>> | 80% | 41,756 psi | 67% | 2507 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 80% | 42,409 psi | 68% | 2526 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 92% | 42,902 psi | 69% | 2552 fps | 95% |
| Hodgdon H4198 | <<locked>> | 80% | 51,242 psi | 82% | 2562 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 34,809 psi | 56% | 2385 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 35,331 psi | 57% | 2421 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 33,127 psi | 53% | 2392 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,179 psi | 40% | 1440 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 35,911 psi | 58% | 2392 fps | 95.6% |
| IMR 3031 | <<locked>> | 80% | 33,359 psi | 53% | 2395 fps | 99.5% |
| IMR 4064 | <<locked>> | 86% | 37,434 psi | 60% | 2411 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 44,237 psi | 71% | 2464 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 35,752 psi | 57% | 2431 fps | 95.1% |
| IMR 8208 XBR | <<locked>> | 80% | 36,637 psi | 59% | 2395 fps | 96.7% |
| Lovex D073.4 | <<locked>> | 80% | 49,966 psi | 80% | 2631 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 80% | 40,466 psi | 65% | 2470 fps | 98.6% |
| Lovex D073.6 | <<locked>> | 80% | 32,474 psi | 52% | 2352 fps | 97.3% |
| Lovex S060 | <<locked>> | 80% | 35,766 psi | 57% | 2329 fps | 95% |
| Lovex S062 | <<locked>> | 82% | 32,314 psi | 52% | 2313 fps | 95.4% |
| Norma 200 | <<locked>> | 80% | 48,399 psi | 78% | 2546 fps | 100% |
| Norma 201 | <<locked>> | 80% | 33,750 psi | 54% | 2333 fps | 95.9% |
| Norma 202 | <<locked>> | 80% | 33,721 psi | 54% | 2349 fps | 98.3% |
| Norma 203B | <<locked>> | 86% | 36,535 psi | 59% | 2441 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 88% | 38,914 psi | 62% | 2507 fps | 95.7% |
| Ramshot TAC | <<locked>> | 88% | 47,703 psi | 76% | 2595 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 82% | 37,884 psi | 61% | 2454 fps | 95.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 39,827 psi | 64% | 2438 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,295 psi | 41% | 1473 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 41,176 psi | 66% | 2480 fps | 99% |
| ReloadSwiss RS 52 | 64.5 gr | 86% | 38,682 psi | 62% | 2546 fps | 95.3% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 30,008 psi | 48% | 2346 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 37,260 psi | 60% | 2392 fps | 98.8% |
| Rottweil R 902 | <<locked>> | 80% | 32,068 psi | 51% | 2287 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 88% | 33,446 psi | 54% | 2382 fps | 95.1% |
| Shooters World AR Plus | <<locked>> | 80% | 49,966 psi | 80% | 2631 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 32,474 psi | 52% | 2352 fps | 97.3% |
| Shooters World Precision | <<locked>> | 82% | 32,314 psi | 52% | 2313 fps | 95.4% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 43,714 psi | 70% | 2497 fps | 98.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 50,923 psi | 82% | 2306 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 46,209 psi | 74% | 2582 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 37,797 psi | 61% | 2490 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 43,816 psi | 70% | 2500 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 45,121 psi | 72% | 2559 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 38,000 psi | 61% | 2444 fps | 95.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 35,679 psi | 57% | 2316 fps | 98.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,008 psi | 47% | 2185 fps | 97.8% |
| Somchem S321 | <<locked>> | 80% | 38,986 psi | 63% | 2464 fps | 97.7% |
| Somchem S335 | <<locked>> | 80% | 35,056 psi | 56% | 2320 fps | 99.1% |
| Somchem S341 | <<locked>> | 82% | 36,506 psi | 59% | 2405 fps | 95.1% |
| Somchem S355 | <<locked>> | 88% | 34,809 psi | 56% | 2392 fps | 95.3% |
| Somchem S365 | <<locked>> | 96% | 31,995 psi | 51% | 2405 fps | 95.3% |
| Vihtavuori N120 | <<locked>> | 80% | 50,546 psi | 81% | 2493 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 40,669 psi | 65% | 2398 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 35,737 psi | 57% | 2326 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 80% | 30,748 psi | 49% | 2290 fps | 99.5% |
| Vihtavuori N140 | <<locked>> | 80% | 31,981 psi | 51% | 2293 fps | 98.1% |
| Vihtavuori N150 | <<locked>> | 86% | 31,067 psi | 50% | 2290 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 36,361 psi | 58% | 2385 fps | 96.8% |
| Vihtavuori N540 | <<locked>> | 80% | 30,530 psi | 49% | 2274 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 36,825 psi | 59% | 2411 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 35,128 psi | 56% | 2421 fps | 97.3% |
| Winchester StaBALL Match | <<locked>> | 82% | 34,534 psi | 55% | 2392 fps | 95.3% |
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 90 powders for .375 H&H Mag. loaded with the .375 | 245gr | Reichenberg HDB Universal. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,825 fps; across all powders the maximum-charge window runs from 1,614 fps to 2,825 fps. Accurate 4064 gives the best case fill at 100 %, and 90 of the 90 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 245.0 gr projectile in 0.375" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 4064, ADI AR 2208, Alliant Reloder- TS 15.5 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 | 245gr | Reichenberg HDB Universal they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.