Load Specifications
Load data in caliber .375 H&H Mag. with .375 | 250gr | Frontier PH HPFB 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, ReloadSwiss RS 52 and Hodgdon LEVERevolution.
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% | 53,563 psi | 86% | 2595 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 53,780 psi | 86% | 2674 fps | 98.4% |
| Accurate 2230 | <<locked>> | 82% | 54,621 psi | 88% | 2687 fps | 98.8% |
| Accurate 2460 | <<locked>> | 88% | 55,492 psi | 89% | 2661 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 53,606 psi | 86% | 2644 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 53,171 psi | 85% | 2667 fps | 100% |
| Accurate 4064 | <<locked>> | 98% | 53,142 psi | 85% | 2680 fps | 100% |
| Accurate LT-30 | <<locked>> | 84% | 53,824 psi | 86% | 2543 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 54,288 psi | 87% | 2566 fps | 100% |
| ADI AR 2206H | <<locked>> | 94% | 55,854 psi | 90% | 2717 fps | 99.3% |
| ADI AR 2207 | <<locked>> | 82% | 55,419 psi | 89% | 2566 fps | 100% |
| ADI AR 2208 | <<locked>> | 98% | 53,345 psi | 86% | 2661 fps | 98.5% |
| ADI AR 2219 | <<locked>> | 84% | 53,896 psi | 86% | 2654 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 55,143 psi | 88% | 2674 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 92% | 54,650 psi | 88% | 2664 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 53,127 psi | 85% | 2726 fps | 99.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 55,230 psi | 89% | 2815 fps | 98.7% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 55,477 psi | 89% | 2726 fps | 99.7% |
| Alliant Reloder-10x | <<locked>> | 86% | 53,577 psi | 86% | 2602 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 53,200 psi | 85% | 2700 fps | 98.7% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 49,284 psi | 79% | 2726 fps | 98.9% |
| Alliant Reloder-7 | <<locked>> | 82% | 56,318 psi | 90% | 2582 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 56,202 psi | 90% | 2585 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 55,492 psi | 89% | 2730 fps | 98.5% |
| Bofors RP3ᴾ | <<locked>> | 100% | 56,043 psi | 90% | 2743 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 90% | 54,273 psi | 87% | 2621 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 92% | 53,621 psi | 86% | 2703 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 90% | 55,521 psi | 89% | 2792 fps | 99% |
| Hodgdon H322 | <<locked>> | 88% | 56,173 psi | 90% | 2684 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 53,519 psi | 86% | 2661 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 54,259 psi | 87% | 2700 fps | 97.7% |
| Hodgdon H4198 | <<locked>> | 82% | 55,782 psi | 89% | 2589 fps | 100% |
| Hodgdon H4895 | <<locked>> | 94% | 56,333 psi | 90% | 2730 fps | 99.6% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 39,044 psi | 63% | 2470 fps | 96.5% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 54,621 psi | 88% | 2753 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,432 psi | 55% | 1594 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 54,302 psi | 87% | 2680 fps | 99.4% |
| IMR 3031 | <<locked>> | 94% | 55,216 psi | 89% | 2720 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 56,246 psi | 90% | 2694 fps | 99% |
| IMR 4198 | <<locked>> | 86% | 54,128 psi | 87% | 2566 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 54,462 psi | 87% | 2730 fps | 99.2% |
| IMR 8208 XBR | <<locked>> | 92% | 55,143 psi | 88% | 2674 fps | 99.8% |
| Lovex D073.4 | <<locked>> | 82% | 55,492 psi | 89% | 2671 fps | 100% |
| Lovex D073.5 | <<locked>> | 88% | 55,317 psi | 89% | 2667 fps | 100% |
| Lovex D073.6 | <<locked>> | 94% | 54,520 psi | 87% | 2697 fps | 100% |
| Lovex S060 | <<locked>> | 94% | 56,246 psi | 90% | 2651 fps | 99.3% |
| Lovex S062 | <<locked>> | 98% | 55,317 psi | 89% | 2690 fps | 99.8% |
| Norma 200 | <<locked>> | 82% | 53,403 psi | 86% | 2575 fps | 100% |
| Norma 201 | <<locked>> | 94% | 54,520 psi | 87% | 2667 fps | 99.8% |
| Norma 202 | <<locked>> | 94% | 54,868 psi | 88% | 2677 fps | 100% |
| Norma 203B | <<locked>> | 98% | 55,579 psi | 89% | 2736 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 98% | 56,101 psi | 90% | 2759 fps | 99.2% |
| Ramshot TAC | <<locked>> | 92% | 56,014 psi | 90% | 2690 fps | 97.3% |
| Ramshot Wild Boar | <<locked>> | 92% | 54,868 psi | 88% | 2710 fps | 99.1% |
| Ramshot X-Terminator | <<locked>> | 88% | 53,330 psi | 86% | 2631 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,563 psi | 55% | 1631 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 55,158 psi | 88% | 2671 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 98% | 55,071 psi | 88% | 2680 fps | 96.2% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 56,304 psi | 90% | 2808 fps | 99.1% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 52,692 psi | 84% | 2792 fps | 100% |
| Rottweil R 901 | <<locked>> | 92% | 55,593 psi | 89% | 2657 fps | 100% |
| Rottweil R 902 | <<locked>> | 96% | 54,708 psi | 88% | 2661 fps | 99.7% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 51,924 psi | 83% | 2680 fps | 99.3% |
| Shooters World AR Plus | <<locked>> | 82% | 55,492 psi | 89% | 2671 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 94% | 54,520 psi | 87% | 2697 fps | 100% |
| Shooters World Precision | <<locked>> | 98% | 55,317 psi | 89% | 2690 fps | 99.8% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 55,187 psi | 88% | 2638 fps | 99.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 54,665 psi | 88% | 2316 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 54,360 psi | 87% | 2664 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 53,983 psi | 87% | 2740 fps | 99.1% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 54,404 psi | 87% | 2618 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 53,664 psi | 86% | 2661 fps | 97.5% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 54,215 psi | 87% | 2690 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 53,577 psi | 86% | 2575 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 56,333 psi | 90% | 2612 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 53,040 psi | 85% | 2664 fps | 99.8% |
| Somchem S335 | <<locked>> | 94% | 55,782 psi | 89% | 2618 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 53,258 psi | 85% | 2661 fps | 98.9% |
| Somchem S355ᴾ | <<locked>> | 100% | 52,794 psi | 85% | 2680 fps | 99.3% |
| Somchem S365ᴾ | <<locked>> | 100% | 37,971 psi | 61% | 2516 fps | 97.8% |
| Vihtavuori N120 | <<locked>> | 82% | 55,274 psi | 89% | 2516 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 53,577 psi | 86% | 2552 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 53,374 psi | 86% | 2566 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 53,403 psi | 86% | 2635 fps | 100% |
| Vihtavuori N140 | <<locked>> | 96% | 55,143 psi | 88% | 2654 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 51,068 psi | 82% | 2618 fps | 99.7% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 45,150 psi | 72% | 2572 fps | 96.1% |
| Vihtavuori N530 | <<locked>> | 92% | 55,796 psi | 89% | 2677 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 96% | 53,374 psi | 86% | 2651 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 46,543 psi | 75% | 2566 fps | 98.4% |
| Winchester 748 | <<locked>> | 92% | 54,708 psi | 88% | 2720 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 94% | 53,563 psi | 86% | 2697 fps | 99.4% |
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% | 39,320 psi | 63% | 2379 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 50,488 psi | 81% | 2621 fps | 97.9% |
| Accurate 2230 | <<locked>> | 80% | 50,792 psi | 81% | 2628 fps | 98.3% |
| Accurate 2460 | <<locked>> | 80% | 42,583 psi | 68% | 2467 fps | 99.6% |
| Accurate 2495 | <<locked>> | 80% | 31,691 psi | 51% | 2283 fps | 99.8% |
| Accurate 2520 | <<locked>> | 80% | 37,710 psi | 60% | 2415 fps | 98.8% |
| Accurate 4064 | <<locked>> | 80% | 29,979 psi | 48% | 2264 fps | 97.8% |
| Accurate LT-30 | <<locked>> | 80% | 47,892 psi | 77% | 2461 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 48,211 psi | 77% | 2477 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 80% | 36,071 psi | 58% | 2369 fps | 95.3% |
| ADI AR 2207 | <<locked>> | 80% | 52,040 psi | 83% | 2520 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 39,392 psi | 63% | 2421 fps | 95.5% |
| ADI AR 2219 | <<locked>> | 80% | 47,297 psi | 76% | 2559 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,000 psi | 61% | 2388 fps | 97.3% |
| Alliant AR-Comp | <<locked>> | 80% | 36,535 psi | 59% | 2398 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 43,700 psi | 70% | 2569 fps | 98.1% |
| Alliant Power Pro 2000-MR | 67.5 gr | 88% | 42,279 psi | 68% | 2585 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 33,576 psi | 54% | 2343 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 44,556 psi | 71% | 2470 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 38,812 psi | 62% | 2451 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 90% | 35,447 psi | 57% | 2444 fps | 95.1% |
| Alliant Reloder-7 | <<locked>> | 80% | 52,968 psi | 85% | 2539 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 46,572 psi | 75% | 2454 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 39,856 psi | 64% | 2467 fps | 95.1% |
| Bofors RP3 | <<locked>> | 84% | 32,808 psi | 53% | 2339 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,176 psi | 64% | 2388 fps | 98.3% |
| Hodgdon BL-C2 | <<locked>> | 80% | 35,766 psi | 57% | 2395 fps | 97.3% |
| Hodgdon CFE223 | <<locked>> | 80% | 39,407 psi | 63% | 2513 fps | 95.7% |
| Hodgdon H322 | <<locked>> | 80% | 43,163 psi | 69% | 2493 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 43,772 psi | 70% | 2513 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 92% | 44,556 psi | 71% | 2546 fps | 95.7% |
| Hodgdon H4198 | <<locked>> | 80% | 52,649 psi | 84% | 2546 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 36,260 psi | 58% | 2382 fps | 96% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 36,724 psi | 59% | 2421 fps | 95.8% |
| Hodgdon LEVERevolution | 61.6 gr | 82% | 34,432 psi | 55% | 2388 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,483 psi | 41% | 1421 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 34,969 psi | 56% | 2336 fps | 95.5% |
| IMR 3031 | <<locked>> | 80% | 34,867 psi | 56% | 2392 fps | 99.7% |
| IMR 4064 | <<locked>> | 86% | 38,856 psi | 62% | 2405 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 45,368 psi | 73% | 2441 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 34,867 psi | 56% | 2375 fps | 95% |
| IMR 8208 XBR | <<locked>> | 80% | 38,000 psi | 61% | 2388 fps | 97.3% |
| Lovex D073.4 | <<locked>> | 80% | 51,634 psi | 83% | 2618 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 42,279 psi | 68% | 2467 fps | 99% |
| Lovex D073.6 | <<locked>> | 80% | 33,997 psi | 55% | 2349 fps | 97.9% |
| Lovex S060 | <<locked>> | 80% | 36,999 psi | 59% | 2323 fps | 95.6% |
| Lovex S062 | <<locked>> | 80% | 31,778 psi | 51% | 2267 fps | 95.3% |
| Norma 200 | <<locked>> | 80% | 50,227 psi | 81% | 2533 fps | 100% |
| Norma 201 | <<locked>> | 80% | 35,317 psi | 57% | 2333 fps | 96.6% |
| Norma 202 | <<locked>> | 80% | 35,201 psi | 56% | 2349 fps | 98.7% |
| Norma 203B | <<locked>> | 84% | 35,810 psi | 57% | 2388 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 86% | 37,666 psi | 60% | 2448 fps | 95.5% |
| Ramshot TAC | <<locked>> | 86% | 46,006 psi | 74% | 2533 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 36,767 psi | 59% | 2395 fps | 95.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 41,292 psi | 66% | 2431 fps | 96.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,686 psi | 41% | 1457 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 42,612 psi | 68% | 2474 fps | 99.3% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 51,619 psi | 83% | 2631 fps | 95.5% |
| ReloadSwiss RS 52 | 62.4 gr | 84% | 37,521 psi | 60% | 2484 fps | 95.1% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 31,227 psi | 50% | 2349 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 39,015 psi | 63% | 2388 fps | 99.2% |
| Rottweil R 902 | <<locked>> | 80% | 33,634 psi | 54% | 2287 fps | 96% |
| Rottweil R 903 | <<locked>> | 86% | 32,866 psi | 53% | 2329 fps | 95% |
| Shooters World AR Plus | <<locked>> | 80% | 51,634 psi | 83% | 2618 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 80% | 33,997 psi | 55% | 2349 fps | 97.9% |
| Shooters World Precision | <<locked>> | 80% | 31,778 psi | 51% | 2267 fps | 95.3% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 45,034 psi | 72% | 2484 fps | 98.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 52,083 psi | 84% | 2287 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 47,587 psi | 76% | 2566 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 36,738 psi | 59% | 2431 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 45,353 psi | 73% | 2490 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 43,816 psi | 70% | 2503 fps | 95.3% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 36,796 psi | 59% | 2385 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,202 psi | 60% | 2310 fps | 99% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,371 psi | 49% | 2182 fps | 98.4% |
| Somchem S321 | <<locked>> | 80% | 40,582 psi | 65% | 2461 fps | 98.2% |
| Somchem S335 | <<locked>> | 80% | 36,521 psi | 59% | 2313 fps | 99.4% |
| Somchem S341 | <<locked>> | 82% | 37,855 psi | 61% | 2402 fps | 95.7% |
| Somchem S355 | <<locked>> | 86% | 34,214 psi | 55% | 2346 fps | 95.3% |
| Somchem S365 | <<locked>> | 94% | 31,488 psi | 50% | 2359 fps | 95.3% |
| Vihtavuori N120 | <<locked>> | 80% | 51,895 psi | 83% | 2474 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 42,235 psi | 68% | 2388 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 37,217 psi | 60% | 2316 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 32,358 psi | 52% | 2290 fps | 99.8% |
| Vihtavuori N140 | <<locked>> | 80% | 33,388 psi | 54% | 2293 fps | 98.6% |
| Vihtavuori N150 | <<locked>> | 84% | 30,443 psi | 49% | 2241 fps | 95.4% |
| Vihtavuori N160 | <<locked>> | 98% | 42,206 psi | 68% | 2520 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 37,797 psi | 61% | 2382 fps | 97.3% |
| Vihtavuori N540 | <<locked>> | 80% | 31,952 psi | 51% | 2274 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 35,853 psi | 57% | 2359 fps | 95.4% |
| Winchester 748 | <<locked>> | 80% | 36,608 psi | 59% | 2418 fps | 97.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 33,576 psi | 54% | 2336 fps | 95.1% |
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 92 powders for .375 H&H Mag. loaded with the .375 | 250gr | Frontier PH HPFB. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,815 fps; across all powders the maximum-charge window runs from 1,594 fps to 2,815 fps. Alliant Reloder- TS 15.5 gives the best case fill at 100 %, and 92 of the 92 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 250.0 gr projectile in 0.375" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder- TS 15.5, Alliant Reloder-17, Bofors RP3 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, ReloadSwiss RS 52, Hodgdon LEVERevolution rank at the top here: for .375 H&H Mag. with the .375 | 250gr | Frontier PH HPFB 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.