Load Specifications
Load data in caliber .375 H&H Mag. with .375 | 240gr | Atomic 29 HP bullet and 89 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 CFE223.
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>> | 92% | 54,592 psi | 88% | 2677 fps | 100% |
| Accurate 2200 | <<locked>> | 84% | 55,550 psi | 89% | 2766 fps | 98.4% |
| Accurate 2230 | <<locked>> | 84% | 56,246 psi | 90% | 2776 fps | 98.8% |
| Accurate 2460 | <<locked>> | 88% | 53,069 psi | 85% | 2697 fps | 100% |
| Accurate 2495 | <<locked>> | 98% | 54,085 psi | 87% | 2723 fps | 100% |
| Accurate 2520 | <<locked>> | 92% | 54,244 psi | 87% | 2749 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 53,577 psi | 86% | 2756 fps | 100% |
| Accurate LT-30 | <<locked>> | 86% | 55,608 psi | 89% | 2631 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 56,072 psi | 90% | 2654 fps | 100% |
| ADI AR 2206H | <<locked>> | 94% | 53,519 psi | 86% | 2749 fps | 98.8% |
| ADI AR 2207 | <<locked>> | 82% | 53,447 psi | 86% | 2608 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 54,679 psi | 88% | 2743 fps | 98.4% |
| ADI AR 2219 | <<locked>> | 86% | 55,492 psi | 89% | 2743 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 53,243 psi | 85% | 2713 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 94% | 55,724 psi | 89% | 2746 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 88% | 54,505 psi | 87% | 2815 fps | 99.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 53,185 psi | 85% | 2844 fps | 98.1% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 53,171 psi | 85% | 2759 fps | 99.4% |
| Alliant Reloder-10x | <<locked>> | 88% | 54,665 psi | 88% | 2684 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 98% | 54,418 psi | 87% | 2782 fps | 98.6% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 47,239 psi | 76% | 2749 fps | 98.3% |
| Alliant Reloder-7 | <<locked>> | 82% | 54,259 psi | 87% | 2625 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 54,520 psi | 87% | 2631 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 53,432 psi | 86% | 2762 fps | 97.9% |
| Bofors RP3ᴾ | <<locked>> | 100% | 53,272 psi | 85% | 2772 fps | 99.4% |
| Hodgdon Benchmark | <<locked>> | 92% | 55,811 psi | 89% | 2707 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 94% | 55,071 psi | 88% | 2789 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 90% | 53,447 psi | 86% | 2825 fps | 98.5% |
| Hodgdon H322 | <<locked>> | 88% | 54,027 psi | 87% | 2723 fps | 100% |
| Hodgdon H335 | <<locked>> | 88% | 55,245 psi | 89% | 2749 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 55,477 psi | 89% | 2782 fps | 97.6% |
| Hodgdon H4198 | <<locked>> | 82% | 54,302 psi | 87% | 2635 fps | 100% |
| Hodgdon H4895 | <<locked>> | 94% | 53,940 psi | 86% | 2762 fps | 99.2% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 56,130 psi | 90% | 2841 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,852 psi | 54% | 1631 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 55,883 psi | 90% | 2769 fps | 99.4% |
| IMR 3031 | <<locked>> | 96% | 56,275 psi | 90% | 2802 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 54,172 psi | 87% | 2726 fps | 98.5% |
| IMR 4198 | <<locked>> | 88% | 55,506 psi | 89% | 2651 fps | 100% |
| IMR 4895 | <<locked>> | 98% | 55,753 psi | 89% | 2815 fps | 99.2% |
| IMR 8208 XBR | <<locked>> | 92% | 53,243 psi | 85% | 2713 fps | 99.5% |
| Lovex D073.4 | <<locked>> | 82% | 53,098 psi | 85% | 2707 fps | 100% |
| Lovex D073.5 | <<locked>> | 88% | 52,910 psi | 85% | 2700 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 96% | 55,666 psi | 89% | 2779 fps | 100% |
| Lovex S060 | <<locked>> | 94% | 54,476 psi | 87% | 2690 fps | 98.9% |
| Lovex S062ᴾ | <<locked>> | 100% | 56,347 psi | 90% | 2772 fps | 99.8% |
| Norma 200 | <<locked>> | 84% | 54,476 psi | 87% | 2657 fps | 100% |
| Norma 201 | <<locked>> | 96% | 55,593 psi | 89% | 2749 fps | 99.7% |
| Norma 202 | <<locked>> | 96% | 56,072 psi | 90% | 2759 fps | 100% |
| Norma 203B | <<locked>> | 98% | 53,461 psi | 86% | 2769 fps | 98.9% |
| Ramshot Big Game | <<locked>> | 98% | 53,867 psi | 86% | 2792 fps | 98.8% |
| Ramshot TAC | <<locked>> | 92% | 53,896 psi | 86% | 2720 fps | 96.6% |
| Ramshot Wild Boar | <<locked>> | 92% | 52,707 psi | 85% | 2740 fps | 98.7% |
| Ramshot X-Terminator | <<locked>> | 90% | 54,969 psi | 88% | 2720 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,055 psi | 55% | 1670 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 53,069 psi | 85% | 2707 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 54,027 psi | 87% | 2844 fps | 98.6% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 50,575 psi | 81% | 2822 fps | 100% |
| Rottweil R 901 | <<locked>> | 94% | 56,347 psi | 90% | 2736 fps | 100% |
| Rottweil R 902 | <<locked>> | 98% | 55,782 psi | 89% | 2743 fps | 99.7% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 49,385 psi | 79% | 2703 fps | 98.8% |
| Shooters World AR Plus | <<locked>> | 82% | 53,098 psi | 85% | 2707 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 96% | 55,666 psi | 89% | 2779 fps | 100% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 56,347 psi | 90% | 2772 fps | 99.8% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 53,258 psi | 85% | 2674 fps | 99.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 56,043 psi | 90% | 2398 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 55,912 psi | 90% | 2753 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 51,808 psi | 83% | 2769 fps | 98.5% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 55,985 psi | 90% | 2707 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 94% | 55,114 psi | 88% | 2743 fps | 97.4% |
| SNPE Vectan SP 9 | <<locked>> | 96% | 55,564 psi | 89% | 2772 fps | 99% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 54,969 psi | 88% | 2661 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 54,302 psi | 87% | 2651 fps | 100% |
| Somchem S321 | <<locked>> | 90% | 54,317 psi | 87% | 2749 fps | 99.7% |
| Somchem S335 | <<locked>> | 94% | 53,505 psi | 86% | 2654 fps | 100% |
| Somchem S341 | <<locked>> | 94% | 54,723 psi | 88% | 2743 fps | 98.8% |
| Somchem S355ᴾ | <<locked>> | 100% | 50,430 psi | 81% | 2710 fps | 98.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 35,998 psi | 58% | 2526 fps | 96.7% |
| Vihtavuori N120 | <<locked>> | 82% | 53,345 psi | 86% | 2559 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 54,708 psi | 88% | 2635 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 54,708 psi | 88% | 2651 fps | 100% |
| Vihtavuori N135 | <<locked>> | 98% | 54,592 psi | 88% | 2717 fps | 100% |
| Vihtavuori N140 | <<locked>> | 96% | 52,982 psi | 85% | 2690 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 48,733 psi | 78% | 2648 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 92% | 53,780 psi | 86% | 2713 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 98% | 54,636 psi | 88% | 2733 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 44,628 psi | 72% | 2589 fps | 97.6% |
| Winchester 748 | <<locked>> | 94% | 56,318 psi | 90% | 2808 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 96% | 55,042 psi | 88% | 2779 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% | 37,347 psi | 60% | 2405 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 48,530 psi | 78% | 2654 fps | 97.3% |
| Accurate 2230 | <<locked>> | 80% | 48,631 psi | 78% | 2661 fps | 97.7% |
| Accurate 2460 | <<locked>> | 80% | 40,205 psi | 64% | 2490 fps | 99.2% |
| Accurate 2495 | <<locked>> | 80% | 29,254 psi | 47% | 2290 fps | 99.2% |
| Accurate 2520 | <<locked>> | 80% | 35,665 psi | 57% | 2434 fps | 98.1% |
| Accurate 4064 | <<locked>> | 80% | 27,731 psi | 44% | 2267 fps | 96.6% |
| Accurate LT-30 | <<locked>> | 80% | 46,093 psi | 74% | 2493 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 46,470 psi | 75% | 2513 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 82% | 36,608 psi | 59% | 2441 fps | 95% |
| ADI AR 2207 | <<locked>> | 80% | 50,140 psi | 80% | 2566 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 40,118 psi | 64% | 2497 fps | 95.3% |
| ADI AR 2219 | <<locked>> | 80% | 45,266 psi | 73% | 2595 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 36,289 psi | 58% | 2411 fps | 96.4% |
| Alliant AR-Comp | <<locked>> | 80% | 34,621 psi | 56% | 2428 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 41,655 psi | 67% | 2595 fps | 97.3% |
| Alliant Power Pro 2000-MR | 70.1 gr | 90% | 43,265 psi | 69% | 2664 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 33,910 psi | 54% | 2408 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 42,598 psi | 68% | 2507 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 39,465 psi | 63% | 2523 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 94% | 38,624 psi | 62% | 2579 fps | 95.9% |
| Alliant Reloder-7 | <<locked>> | 80% | 50,995 psi | 82% | 2579 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 44,962 psi | 72% | 2493 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 40,712 psi | 65% | 2543 fps | 95% |
| Bofors RP3 | <<locked>> | 86% | 33,025 psi | 53% | 2402 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 38,508 psi | 62% | 2418 fps | 97.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 33,866 psi | 54% | 2411 fps | 96.3% |
| Hodgdon CFE223 | 65.4 gr | 82% | 40,292 psi | 65% | 2592 fps | 95.5% |
| Hodgdon H322 | <<locked>> | 80% | 41,292 psi | 66% | 2526 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 80% | 41,887 psi | 67% | 2543 fps | 99.5% |
| Hodgdon H380 | <<locked>> | 94% | 45,237 psi | 73% | 2621 fps | 95.5% |
| Hodgdon H4198 | <<locked>> | 80% | 50,836 psi | 82% | 2585 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 34,432 psi | 55% | 2398 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 35,085 psi | 56% | 2464 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,048 psi | 40% | 1453 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 35,650 psi | 57% | 2411 fps | 95.3% |
| IMR 3031 | <<locked>> | 80% | 32,982 psi | 53% | 2411 fps | 99.3% |
| IMR 4064 | <<locked>> | 88% | 39,537 psi | 63% | 2480 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 43,874 psi | 70% | 2484 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 37,739 psi | 61% | 2500 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 36,289 psi | 58% | 2411 fps | 96.4% |
| Lovex D073.4 | <<locked>> | 80% | 49,371 psi | 79% | 2651 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 80% | 40,103 psi | 64% | 2490 fps | 98.3% |
| Lovex D073.6 | <<locked>> | 80% | 32,068 psi | 51% | 2365 fps | 97% |
| Lovex S060 | <<locked>> | 82% | 37,666 psi | 60% | 2398 fps | 95.4% |
| Lovex S062 | <<locked>> | 82% | 31,923 psi | 51% | 2329 fps | 95% |
| Norma 200 | <<locked>> | 80% | 47,921 psi | 77% | 2569 fps | 100% |
| Norma 201 | <<locked>> | 80% | 33,388 psi | 54% | 2349 fps | 95.5% |
| Norma 202 | <<locked>> | 80% | 33,504 psi | 54% | 2372 fps | 98.1% |
| Norma 203B | <<locked>> | 86% | 36,201 psi | 58% | 2461 fps | 95% |
| Ramshot Big Game | <<locked>> | 88% | 38,537 psi | 62% | 2523 fps | 95.3% |
| Ramshot TAC | <<locked>> | 88% | 47,282 psi | 76% | 2615 fps | 95.1% |
| Ramshot Wild Boar | <<locked>> | 82% | 37,550 psi | 60% | 2470 fps | 95.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 39,378 psi | 63% | 2454 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,179 psi | 40% | 1490 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 40,756 psi | 65% | 2500 fps | 98.8% |
| ReloadSwiss RS 52 | 66.5 gr | 88% | 41,002 psi | 66% | 2618 fps | 95.8% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 31,749 psi | 51% | 2418 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 36,898 psi | 59% | 2408 fps | 98.6% |
| Rottweil R 902 | <<locked>> | 82% | 33,808 psi | 54% | 2352 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 90% | 35,317 psi | 57% | 2448 fps | 95.6% |
| Shooters World AR Plus | <<locked>> | 80% | 49,371 psi | 79% | 2651 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 32,068 psi | 51% | 2365 fps | 97% |
| Shooters World Precision | <<locked>> | 82% | 31,923 psi | 51% | 2329 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 43,236 psi | 69% | 2513 fps | 97.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 50,488 psi | 81% | 2329 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 45,658 psi | 73% | 2598 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 37,434 psi | 60% | 2507 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 43,352 psi | 70% | 2523 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 44,686 psi | 72% | 2579 fps | 95.1% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 37,507 psi | 60% | 2461 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 35,346 psi | 57% | 2336 fps | 98.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,703 psi | 46% | 2201 fps | 97.5% |
| Somchem S321 | <<locked>> | 80% | 38,682 psi | 62% | 2484 fps | 97.4% |
| Somchem S335 | <<locked>> | 80% | 34,693 psi | 56% | 2336 fps | 98.9% |
| Somchem S341 | <<locked>> | 84% | 38,667 psi | 62% | 2474 fps | 95.6% |
| Somchem S355 | <<locked>> | 90% | 36,753 psi | 59% | 2461 fps | 95.8% |
| Somchem S365 | <<locked>> | 98% | 33,808 psi | 54% | 2477 fps | 95.9% |
| Vihtavuori N120 | <<locked>> | 80% | 50,111 psi | 80% | 2516 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 40,321 psi | 65% | 2421 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 35,404 psi | 57% | 2343 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 80% | 30,356 psi | 49% | 2306 fps | 99.4% |
| Vihtavuori N140 | <<locked>> | 80% | 31,604 psi | 51% | 2310 fps | 97.8% |
| Vihtavuori N150 | <<locked>> | 86% | 30,661 psi | 49% | 2303 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 35,969 psi | 58% | 2402 fps | 96.4% |
| Vihtavuori N540 | <<locked>> | 80% | 30,298 psi | 49% | 2293 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 36,564 psi | 59% | 2428 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 34,693 psi | 56% | 2434 fps | 96.9% |
| Winchester StaBALL Match | <<locked>> | 84% | 36,608 psi | 59% | 2464 fps | 95.8% |
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 89 powders for .375 H&H Mag. loaded with the .375 | 240gr | Atomic 29 HP. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,844 fps; across all powders the maximum-charge window runs from 1,631 fps to 2,844 fps. Accurate 4064 gives the best case fill at 100 %, and 89 of the 89 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 240.0 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, ReloadSwiss RS 52, Hodgdon CFE223 rank at the top here: for .375 H&H Mag. with the .375 | 240gr | Atomic 29 HP 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.