Load Specifications
Load data in caliber .375 H&H Mag. with .376 | 250gr | Peregrine Glider GRM bullet and 89 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon CFE223, Alliant Power Pro 1200-R and Alliant Power Pro 2000-MR.
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 1680 | <<locked>> | 82% | 55,216 psi | 89% | 2520 fps | 100% |
| Accurate 2015 | <<locked>> | 94% | 54,621 psi | 88% | 2585 fps | 100% |
| Accurate 2200 | <<locked>> | 86% | 56,159 psi | 90% | 2674 fps | 98.3% |
| Accurate 2230 | <<locked>> | 84% | 52,881 psi | 85% | 2631 fps | 98.2% |
| Accurate 2460 | <<locked>> | 90% | 53,316 psi | 85% | 2605 fps | 100% |
| Accurate 2495ᴾ | <<locked>> | 100% | 53,693 psi | 86% | 2628 fps | 100% |
| Accurate 2520 | <<locked>> | 94% | 54,244 psi | 87% | 2657 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 49,806 psi | 80% | 2615 fps | 100% |
| Accurate LT-30 | <<locked>> | 88% | 56,405 psi | 90% | 2546 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 53,490 psi | 86% | 2523 fps | 100% |
| ADI AR 2206H | <<locked>> | 96% | 53,853 psi | 86% | 2657 fps | 98.7% |
| ADI AR 2207 | <<locked>> | 84% | 53,780 psi | 86% | 2523 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 51,474 psi | 83% | 2602 fps | 97.7% |
| ADI AR 2219 | <<locked>> | 88% | 55,927 psi | 90% | 2654 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 94% | 53,374 psi | 86% | 2621 fps | 99.4% |
| Alliant AR-Comp | <<locked>> | 96% | 55,506 psi | 89% | 2654 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 90% | 54,607 psi | 88% | 2720 fps | 99.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 98% | 53,476 psi | 86% | 2749 fps | 97.9% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 49,617 psi | 80% | 2615 fps | 98.8% |
| Alliant Reloder-10x | <<locked>> | 90% | 55,027 psi | 88% | 2598 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 54,172 psi | 87% | 2684 fps | 98.4% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 44,193 psi | 71% | 2598 fps | 97.3% |
| Alliant Reloder-7 | <<locked>> | 84% | 54,824 psi | 88% | 2539 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 55,114 psi | 88% | 2546 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 96% | 53,388 psi | 86% | 2667 fps | 97.7% |
| Bofors RP3ᴾ | <<locked>> | 100% | 49,588 psi | 80% | 2628 fps | 98.9% |
| Hodgdon Benchmark | <<locked>> | 94% | 56,217 psi | 90% | 2615 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 96% | 54,998 psi | 88% | 2694 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 92% | 53,359 psi | 86% | 2730 fps | 98.3% |
| Hodgdon H322 | <<locked>> | 90% | 54,302 psi | 87% | 2635 fps | 100% |
| Hodgdon H335 | <<locked>> | 90% | 55,550 psi | 89% | 2661 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 51,851 psi | 83% | 2635 fps | 96.7% |
| Hodgdon H4198 | <<locked>> | 84% | 55,013 psi | 88% | 2546 fps | 100% |
| Hodgdon H4895 | <<locked>> | 96% | 54,230 psi | 87% | 2671 fps | 99.1% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 55,883 psi | 90% | 2743 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,721 psi | 54% | 1555 fps | 100% |
| Hodgdon VARGET | <<locked>> | 98% | 56,028 psi | 90% | 2674 fps | 99.2% |
| IMR 3031 | <<locked>> | 98% | 56,086 psi | 90% | 2707 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 54,215 psi | 87% | 2631 fps | 98.3% |
| IMR 4198 | <<locked>> | 90% | 56,101 psi | 90% | 2566 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 55,463 psi | 89% | 2713 fps | 99% |
| IMR 8208 XBR | <<locked>> | 94% | 53,374 psi | 86% | 2621 fps | 99.4% |
| Lovex D073.4 | <<locked>> | 84% | 53,519 psi | 86% | 2618 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 90% | 53,098 psi | 85% | 2612 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 98% | 55,608 psi | 89% | 2687 fps | 100% |
| Lovex S060 | <<locked>> | 96% | 54,694 psi | 88% | 2595 fps | 98.7% |
| Lovex S062ᴾ | <<locked>> | 100% | 52,910 psi | 85% | 2628 fps | 99.4% |
| Norma 200 | <<locked>> | 86% | 54,926 psi | 88% | 2575 fps | 100% |
| Norma 201 | <<locked>> | 98% | 55,695 psi | 89% | 2654 fps | 99.6% |
| Norma 202 | <<locked>> | 98% | 55,883 psi | 90% | 2664 fps | 100% |
| Norma 203Bᴾ | <<locked>> | 100% | 53,156 psi | 85% | 2671 fps | 98.7% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 54,012 psi | 87% | 2700 fps | 98.6% |
| Ramshot TAC | <<locked>> | 94% | 54,273 psi | 87% | 2628 fps | 96.4% |
| Ramshot Wild Boar | <<locked>> | 96% | 56,376 psi | 90% | 2700 fps | 98.9% |
| Ramshot X-Terminator | <<locked>> | 92% | 55,201 psi | 89% | 2625 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,721 psi | 54% | 1591 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 53,374 psi | 86% | 2615 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 98% | 53,693 psi | 86% | 2743 fps | 98.3% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 47,326 psi | 76% | 2667 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 94% | 53,171 psi | 85% | 2598 fps | 100% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 55,738 psi | 89% | 2644 fps | 99.6% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 45,832 psi | 73% | 2559 fps | 98.1% |
| Shooters World AR Plus | <<locked>> | 84% | 53,519 psi | 86% | 2618 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 98% | 55,608 psi | 89% | 2687 fps | 100% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 52,910 psi | 85% | 2628 fps | 99.4% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 53,969 psi | 87% | 2589 fps | 99.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 53,969 psi | 87% | 2287 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 52,678 psi | 84% | 2618 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 48,414 psi | 78% | 2621 fps | 97.7% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 56,217 psi | 90% | 2615 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 96% | 55,390 psi | 89% | 2651 fps | 97.1% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 55,593 psi | 89% | 2677 fps | 98.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 55,361 psi | 89% | 2569 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 50,981 psi | 82% | 2520 fps | 100% |
| Somchem S321 | <<locked>> | 92% | 54,752 psi | 88% | 2661 fps | 99.7% |
| Somchem S335 | <<locked>> | 96% | 53,853 psi | 86% | 2569 fps | 100% |
| Somchem S341 | <<locked>> | 96% | 54,752 psi | 88% | 2651 fps | 98.7% |
| Somchem S355ᴾ | <<locked>> | 100% | 47,195 psi | 76% | 2569 fps | 98.1% |
| Vihtavuori N120 | <<locked>> | 84% | 53,751 psi | 86% | 2474 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 55,274 psi | 89% | 2549 fps | 100% |
| Vihtavuori N133 | <<locked>> | 96% | 54,955 psi | 88% | 2559 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 54,259 psi | 87% | 2625 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 53,098 psi | 85% | 2598 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 45,513 psi | 73% | 2510 fps | 98.8% |
| Vihtavuori N530 | <<locked>> | 94% | 54,056 psi | 87% | 2625 fps | 99.5% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 54,752 psi | 88% | 2641 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 41,872 psi | 67% | 2448 fps | 96.6% |
| Winchester 748 | <<locked>> | 96% | 56,289 psi | 90% | 2717 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 98% | 54,984 psi | 88% | 2687 fps | 99.2% |
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 1680 | <<locked>> | 80% | 51,721 psi | 83% | 2474 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 35,085 psi | 56% | 2283 fps | 99.8% |
| Accurate 2200 | <<locked>> | 80% | 45,890 psi | 74% | 2516 fps | 96.5% |
| Accurate 2230 | <<locked>> | 80% | 45,745 psi | 73% | 2520 fps | 96.9% |
| Accurate 2460 | <<locked>> | 80% | 37,826 psi | 61% | 2362 fps | 98.7% |
| Accurate 2495 | <<locked>> | 80% | 27,079 psi | 43% | 2169 fps | 98.7% |
| Accurate 2520 | <<locked>> | 80% | 33,185 psi | 53% | 2303 fps | 97.2% |
| Accurate 4064 | <<locked>> | 80% | 25,686 psi | 41% | 2142 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 43,990 psi | 71% | 2372 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 44,367 psi | 71% | 2385 fps | 99.3% |
| ADI AR 2206H | <<locked>> | 86% | 39,102 psi | 63% | 2411 fps | 95.7% |
| ADI AR 2207 | <<locked>> | 80% | 47,500 psi | 76% | 2441 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 40,219 psi | 64% | 2411 fps | 95% |
| ADI AR 2219 | <<locked>> | 80% | 42,540 psi | 68% | 2461 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 80% | 34,229 psi | 55% | 2283 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 80% | 32,445 psi | 52% | 2303 fps | 100% |
| Alliant Power Pro 1200-R | 53.3 gr | 80% | 39,073 psi | 63% | 2457 fps | 96.5% |
| Alliant Power Pro 2000-MR | 65.3 gr | 92% | 43,526 psi | 70% | 2575 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 33,779 psi | 54% | 2329 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 40,263 psi | 65% | 2382 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 39,407 psi | 63% | 2438 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 96% | 38,667 psi | 62% | 2487 fps | 95.5% |
| Alliant Reloder-7 | <<locked>> | 80% | 48,617 psi | 78% | 2457 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 42,656 psi | 68% | 2369 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 43,642 psi | 70% | 2510 fps | 95.6% |
| Bofors RP3 | <<locked>> | 90% | 35,070 psi | 56% | 2372 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 36,593 psi | 59% | 2293 fps | 96.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 31,647 psi | 51% | 2283 fps | 95.4% |
| Hodgdon CFE223 | 61 gr | 84% | 40,422 psi | 65% | 2507 fps | 95.3% |
| Hodgdon H322 | <<locked>> | 80% | 38,841 psi | 62% | 2395 fps | 99.6% |
| Hodgdon H335 | <<locked>> | 80% | 39,494 psi | 63% | 2415 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 96% | 45,339 psi | 73% | 2533 fps | 95.2% |
| Hodgdon H4198 | <<locked>> | 80% | 48,544 psi | 78% | 2457 fps | 100% |
| Hodgdon H4895 | <<locked>> | 84% | 36,956 psi | 59% | 2375 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 35,215 psi | 56% | 2382 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,874 psi | 40% | 1388 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 35,853 psi | 57% | 2333 fps | 95.1% |
| IMR 3031 | <<locked>> | 80% | 30,879 psi | 50% | 2287 fps | 98.8% |
| IMR 4064 | <<locked>> | 90% | 39,581 psi | 63% | 2395 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 41,655 psi | 67% | 2362 fps | 100% |
| IMR 4895 | <<locked>> | 88% | 37,623 psi | 60% | 2418 fps | 95.4% |
| IMR 8208 XBR | <<locked>> | 80% | 34,229 psi | 55% | 2283 fps | 95.5% |
| Lovex D073.4 | <<locked>> | 80% | 46,325 psi | 74% | 2513 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 80% | 37,536 psi | 60% | 2359 fps | 97.6% |
| Lovex D073.6 | <<locked>> | 80% | 29,733 psi | 48% | 2234 fps | 96% |
| Lovex S060 | <<locked>> | 84% | 38,189 psi | 61% | 2323 fps | 95.3% |
| Lovex S062 | <<locked>> | 86% | 34,040 psi | 55% | 2300 fps | 95.7% |
| Norma 200 | <<locked>> | 80% | 45,223 psi | 73% | 2444 fps | 100% |
| Norma 201 | <<locked>> | 82% | 33,634 psi | 54% | 2277 fps | 95.5% |
| Norma 202 | <<locked>> | 80% | 31,328 psi | 50% | 2244 fps | 97.3% |
| Norma 203B | <<locked>> | 90% | 38,624 psi | 62% | 2428 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 90% | 38,566 psi | 62% | 2438 fps | 95% |
| Ramshot TAC | <<locked>> | 92% | 50,865 psi | 82% | 2579 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 84% | 37,681 psi | 60% | 2392 fps | 95.1% |
| Ramshot X-Terminator | <<locked>> | 82% | 39,813 psi | 64% | 2379 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,831 psi | 40% | 1417 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 38,464 psi | 62% | 2372 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 40,857 psi | 66% | 2526 fps | 95.5% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 31,821 psi | 51% | 2336 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 34,737 psi | 56% | 2283 fps | 98% |
| Rottweil R 902 | <<locked>> | 84% | 33,968 psi | 54% | 2277 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 92% | 34,998 psi | 56% | 2362 fps | 95.3% |
| Shooters World AR Plus | <<locked>> | 80% | 46,325 psi | 74% | 2513 fps | 99.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 29,733 psi | 48% | 2234 fps | 96% |
| Shooters World Precision | <<locked>> | 86% | 34,040 psi | 55% | 2300 fps | 95.7% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 40,872 psi | 66% | 2385 fps | 97.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 48,544 psi | 78% | 2221 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 43,163 psi | 69% | 2470 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 39,900 psi | 64% | 2470 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 41,002 psi | 66% | 2395 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 48,283 psi | 77% | 2549 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 37,739 psi | 61% | 2382 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 33,504 psi | 54% | 2215 fps | 97.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 27,064 psi | 43% | 2087 fps | 96.8% |
| Somchem S321 | <<locked>> | 80% | 36,318 psi | 58% | 2352 fps | 96.6% |
| Somchem S335 | <<locked>> | 80% | 32,721 psi | 52% | 2218 fps | 98.4% |
| Somchem S341 | <<locked>> | 86% | 38,885 psi | 62% | 2395 fps | 95.4% |
| Somchem S355 | <<locked>> | 92% | 36,608 psi | 59% | 2379 fps | 95.5% |
| Vihtavuori N120 | <<locked>> | 80% | 47,514 psi | 76% | 2395 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 38,247 psi | 61% | 2303 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 33,475 psi | 54% | 2224 fps | 99.6% |
| Vihtavuori N135 | <<locked>> | 80% | 28,340 psi | 45% | 2185 fps | 98.9% |
| Vihtavuori N140 | <<locked>> | 80% | 29,602 psi | 47% | 2188 fps | 97.1% |
| Vihtavuori N150 | <<locked>> | 90% | 32,663 psi | 52% | 2274 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 33,924 psi | 54% | 2277 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 28,427 psi | 46% | 2172 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 39,262 psi | 63% | 2395 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 32,605 psi | 52% | 2306 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 86% | 36,622 psi | 59% | 2379 fps | 95.6% |
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 .376 | 250gr | Peregrine Glider GRM. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,749 fps; across all powders the maximum-charge window runs from 1,555 fps to 2,749 fps. Accurate 2495 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 250.0 gr projectile in 0.376" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, ADI AR 2208 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. Hodgdon CFE223, Alliant Power Pro 1200-R, Alliant Power Pro 2000-MR rank at the top here: for .375 H&H Mag. with the .376 | 250gr | Peregrine Glider GRM 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.