Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:300 gr
Bullet Diameter:0.376"
Bullet Length:<<locked>>
Caliber:.375 H&H Mag. load data
Case Length (l3):2.859"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:95.3 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:6.0
Load data in caliber .375 H&H Mag. with .376 | 300gr | Peregrine VRG-1 bullet and 107 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 60 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>> | 88% | 54,795 psi | 88% | 2365 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 53,084 psi | 85% | 2388 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 55,376 psi | 89% | 2418 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 54,810 psi | 88% | 2448 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 53,069 psi | 85% | 2382 fps | 96.3% |
| Accurate 4064 | <<locked>> | 96% | 55,230 psi | 89% | 2461 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 47,456 psi | 76% | 2434 fps | 98.8% |
| Accurate LT-30 | <<locked>> | 82% | 54,621 psi | 88% | 2316 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 55,085 psi | 88% | 2339 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 53,998 psi | 87% | 2457 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 96% | 54,955 psi | 88% | 2454 fps | 99.7% |
| ADI AR 2219 | <<locked>> | 82% | 55,448 psi | 89% | 2425 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 53,316 psi | 85% | 2415 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 53,258 psi | 85% | 2392 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 54,926 psi | 88% | 2507 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 53,185 psi | 85% | 2556 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 54,273 psi | 87% | 2470 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 54,795 psi | 88% | 2369 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 55,143 psi | 88% | 2490 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 47,195 psi | 76% | 2444 fps | 98.9% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 54,607 psi | 88% | 2575 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 33,011 psi | 53% | 2205 fps | 96.6% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 53,766 psi | 86% | 2320 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 53,519 psi | 86% | 2470 fps | 99.5% |
| Bofors RP3 | <<locked>> | 96% | 54,476 psi | 87% | 2484 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 55,405 psi | 89% | 2454 fps | 97% |
| Hodgdon Benchmark | <<locked>> | 88% | 55,506 psi | 89% | 2402 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 55,651 psi | 89% | 2487 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 53,896 psi | 86% | 2526 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 84% | 53,882 psi | 86% | 2408 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 54,969 psi | 88% | 2434 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 56,028 psi | 90% | 2497 fps | 99.3% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 51,126 psi | 82% | 2484 fps | 97% |
| Hodgdon H4350ᴾ | <<locked>> | 100% | 56,275 psi | 90% | 2503 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 90% | 54,476 psi | 87% | 2464 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 43,337 psi | 69% | 2339 fps | 99.3% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 53,098 psi | 85% | 2490 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 52,475 psi | 84% | 2516 fps | 96.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,722 psi | 56% | 1444 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 56,028 psi | 90% | 2467 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 53,998 psi | 87% | 2448 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 54,317 psi | 87% | 2434 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 92% | 55,085 psi | 88% | 2421 fps | 97.5% |
| IMR 4198 | <<locked>> | 84% | 55,448 psi | 89% | 2333 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 48,646 psi | 78% | 2382 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 98% | 54,041 psi | 87% | 2438 fps | 97.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 45,440 psi | 73% | 2388 fps | 98.5% |
| IMR 4895 | <<locked>> | 92% | 53,026 psi | 85% | 2474 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 88% | 53,316 psi | 85% | 2415 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 53,127 psi | 85% | 2402 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 52,939 psi | 85% | 2434 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 54,201 psi | 87% | 2395 fps | 99.9% |
| Lovex S062 | <<locked>> | 94% | 53,766 psi | 86% | 2434 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 52,649 psi | 84% | 2428 fps | 98.3% |
| Lovex S070ᴾ | <<locked>> | 100% | 50,038 psi | 80% | 2411 fps | 96.9% |
| Norma 201 | <<locked>> | 92% | 55,956 psi | 90% | 2448 fps | 100% |
| Norma 202 | <<locked>> | 92% | 56,420 psi | 90% | 2451 fps | 100% |
| Norma 203B | <<locked>> | 94% | 54,215 psi | 87% | 2480 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 47,558 psi | 76% | 2431 fps | 98.7% |
| Ramshot Big Game | <<locked>> | 94% | 54,563 psi | 87% | 2503 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 46,702 psi | 75% | 2425 fps | 96.9% |
| Ramshot TAC | <<locked>> | 88% | 53,679 psi | 86% | 2434 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 88% | 52,895 psi | 85% | 2448 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 86% | 54,346 psi | 87% | 2418 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,128 psi | 56% | 1480 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 53,069 psi | 85% | 2402 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 53,113 psi | 85% | 2434 fps | 97.8% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 55,332 psi | 89% | 2549 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 54,723 psi | 88% | 2579 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 47,355 psi | 76% | 2457 fps | 98.5% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 48,341 psi | 78% | 2480 fps | 98.2% |
| Rottweil R 901 | <<locked>> | 88% | 53,447 psi | 86% | 2388 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 56,246 psi | 90% | 2444 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 54,128 psi | 87% | 2470 fps | 100% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 55,405 psi | 89% | 2454 fps | 97% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 52,649 psi | 84% | 2428 fps | 98.3% |
| Shooters World Match Rifle | <<locked>> | 90% | 52,939 psi | 85% | 2434 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 53,766 psi | 86% | 2434 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 50,038 psi | 80% | 2411 fps | 96.9% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 56,275 psi | 90% | 2418 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 55,550 psi | 89% | 2438 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 56,391 psi | 90% | 2533 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 55,898 psi | 90% | 2388 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 55,129 psi | 88% | 2454 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 55,883 psi | 90% | 2477 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 54,824 psi | 88% | 2356 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 54,375 psi | 87% | 2352 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 53,345 psi | 86% | 2388 fps | 97.2% |
| Somchem S321 | <<locked>> | 86% | 54,462 psi | 87% | 2448 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 53,693 psi | 86% | 2356 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 54,708 psi | 88% | 2451 fps | 99.9% |
| Somchem S355 | <<locked>> | 98% | 54,853 psi | 88% | 2474 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 42,293 psi | 68% | 2388 fps | 99.9% |
| Vihtavuori N130 | <<locked>> | 86% | 54,824 psi | 88% | 2326 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 54,926 psi | 88% | 2343 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 55,622 psi | 89% | 2411 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 53,621 psi | 86% | 2392 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 52,953 psi | 85% | 2411 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 50,053 psi | 80% | 2431 fps | 98.9% |
| Vihtavuori N530 | <<locked>> | 88% | 53,867 psi | 86% | 2415 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 55,071 psi | 88% | 2431 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 48,907 psi | 78% | 2434 fps | 98.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 35,099 psi | 56% | 2270 fps | 96.7% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 51,039 psi | 82% | 2421 fps | 99.9% |
| Winchester 748 | <<locked>> | 88% | 53,171 psi | 85% | 2457 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 51,343 psi | 82% | 2487 fps | 97.1% |
| Winchester StaBALL Match | <<locked>> | 92% | 55,361 psi | 89% | 2484 fps | 100% |
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% | 42,728 psi | 69% | 2208 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 46,412 psi | 74% | 2303 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 34,766 psi | 56% | 2133 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 41,727 psi | 67% | 2267 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 49,545 psi | 79% | 2336 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 32,938 psi | 53% | 2126 fps | 99.7% |
| Accurate 4350 | <<locked>> | 90% | 33,417 psi | 54% | 2192 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 51,503 psi | 83% | 2280 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 51,895 psi | 83% | 2300 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 39,233 psi | 63% | 2228 fps | 98.2% |
| ADI AR 2208 | <<locked>> | 80% | 33,460 psi | 54% | 2100 fps | 95.8% |
| ADI AR 2219 | <<locked>> | 80% | 51,692 psi | 83% | 2379 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,321 psi | 66% | 2238 fps | 99.4% |
| Alliant AR-Comp | <<locked>> | 80% | 40,727 psi | 65% | 2231 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 48,051 psi | 77% | 2408 fps | 99.8% |
| Alliant Power Pro 2000-MR | 59.3 gr | 80% | 35,447 psi | 57% | 2241 fps | 96.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,503 psi | 52% | 2116 fps | 97.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 48,501 psi | 78% | 2290 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,070 psi | 56% | 2165 fps | 96.6% |
| Alliant Reloder-16 | <<locked>> | 90% | 34,679 psi | 56% | 2208 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 82% | 29,936 psi | 48% | 2126 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 98% | 31,169 psi | 50% | 2159 fps | 95.8% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 50,430 psi | 81% | 2280 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 38,276 psi | 61% | 2231 fps | 96.9% |
| Bofors RP3 | <<locked>> | 80% | 31,618 psi | 51% | 2113 fps | 97.2% |
| Bofors RP7 | <<locked>> | 94% | 45,890 psi | 74% | 2320 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,424 psi | 70% | 2234 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,566 psi | 63% | 2257 fps | 99.5% |
| Hodgdon CFE223 | <<locked>> | 80% | 43,453 psi | 70% | 2372 fps | 98.7% |
| Hodgdon H322 | <<locked>> | 80% | 47,427 psi | 76% | 2326 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 47,921 psi | 77% | 2346 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 35,230 psi | 56% | 2165 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 96% | 44,904 psi | 72% | 2388 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 96% | 49,530 psi | 79% | 2408 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 39,508 psi | 63% | 2238 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 29,646 psi | 48% | 2073 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,447 psi | 57% | 2208 fps | 98.2% |
| Hodgdon Superformance | <<locked>> | 98% | 48,950 psi | 78% | 2464 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,715 psi | 41% | 1286 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,087 psi | 61% | 2198 fps | 98.3% |
| IMR 3031 | <<locked>> | 80% | 38,856 psi | 62% | 2238 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,085 psi | 56% | 2129 fps | 96.6% |
| IMR 4166 Enduron | <<locked>> | 86% | 45,629 psi | 73% | 2283 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 49,298 psi | 79% | 2260 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 45,701 psi | 73% | 2339 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 92% | 45,020 psi | 72% | 2303 fps | 95.3% |
| IMR 4831 | <<locked>> | 90% | 32,677 psi | 52% | 2156 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 35,882 psi | 58% | 2195 fps | 97.5% |
| IMR 8208 XBR | <<locked>> | 80% | 41,321 psi | 66% | 2238 fps | 99.4% |
| Lovex D073.5 | <<locked>> | 80% | 46,253 psi | 74% | 2310 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 37,579 psi | 60% | 2208 fps | 99.7% |
| Lovex S060 | <<locked>> | 80% | 39,943 psi | 64% | 2178 fps | 98.3% |
| Lovex S062 | <<locked>> | 80% | 34,664 psi | 56% | 2133 fps | 98.3% |
| Lovex S065 | <<locked>> | 90% | 38,682 psi | 62% | 2208 fps | 95.3% |
| Lovex S070 | <<locked>> | 96% | 44,034 psi | 71% | 2320 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 38,348 psi | 61% | 2188 fps | 99% |
| Norma 202 | <<locked>> | 80% | 38,537 psi | 62% | 2198 fps | 100% |
| Norma 203B | <<locked>> | 80% | 34,447 psi | 55% | 2159 fps | 97% |
| Norma URP | <<locked>> | 90% | 34,345 psi | 55% | 2198 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 33,997 psi | 55% | 2169 fps | 96.6% |
| Ramshot Hunter | <<locked>> | 96% | 40,973 psi | 66% | 2326 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 41,234 psi | 66% | 2241 fps | 96.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 40,306 psi | 65% | 2257 fps | 98.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 44,802 psi | 72% | 2283 fps | 99% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,991 psi | 42% | 1319 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 46,441 psi | 74% | 2310 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 40,886 psi | 66% | 2244 fps | 95% |
| ReloadSwiss RS 52 | 57.4 gr | 80% | 36,260 psi | 58% | 2247 fps | 97% |
| ReloadSwiss RS 60 | 58.3 gr | 80% | 29,834 psi | 48% | 2133 fps | 98% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 35,853 psi | 57% | 2257 fps | 95.6% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 39,363 psi | 63% | 2320 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 41,959 psi | 67% | 2224 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 36,419 psi | 58% | 2146 fps | 98.6% |
| Rottweil R 903 | <<locked>> | 80% | 29,733 psi | 48% | 2064 fps | 96.2% |
| Rottweil R 907 | <<locked>> | 94% | 45,890 psi | 74% | 2320 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 90% | 38,682 psi | 62% | 2208 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,579 psi | 60% | 2208 fps | 99.7% |
| Shooters World Precision | <<locked>> | 80% | 34,664 psi | 56% | 2133 fps | 98.3% |
| Shooters World SW4350 | <<locked>> | 96% | 44,034 psi | 71% | 2320 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 49,255 psi | 79% | 2329 fps | 99.9% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 51,924 psi | 83% | 2392 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 31,024 psi | 50% | 2106 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 49,400 psi | 79% | 2310 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 39,131 psi | 63% | 2211 fps | 96.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,739 psi | 61% | 2198 fps | 97.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,147 psi | 64% | 2156 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,996 psi | 53% | 2044 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 43,482 psi | 70% | 2251 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 44,425 psi | 71% | 2306 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 39,537 psi | 63% | 2159 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 38,972 psi | 62% | 2215 fps | 98% |
| Somchem S355 | <<locked>> | 80% | 30,908 psi | 50% | 2073 fps | 96.3% |
| Somchem S365 | <<locked>> | 86% | 26,905 psi | 43% | 2057 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 45,600 psi | 73% | 2211 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,393 psi | 65% | 2156 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 35,621 psi | 57% | 2139 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 36,463 psi | 58% | 2146 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 29,283 psi | 47% | 2021 fps | 97.2% |
| Vihtavuori N160 | <<locked>> | 88% | 33,895 psi | 54% | 2156 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 41,205 psi | 66% | 2234 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 80% | 34,940 psi | 56% | 2133 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 90% | 35,172 psi | 56% | 2201 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 98% | 32,866 psi | 53% | 2224 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 30,052 psi | 48% | 2047 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 40,321 psi | 65% | 2270 fps | 99.7% |
| Winchester 760 | <<locked>> | 96% | 45,107 psi | 72% | 2392 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,072 psi | 59% | 2205 fps | 98.2% |
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 107 powders for .375 H&H Mag. loaded with the .376 | 300gr | Peregrine VRG-1. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,579 fps; across all powders the maximum-charge window runs from 1,444 fps to 2,579 fps. Accurate 4350 gives the best case fill at 100 %, and 107 of the 107 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 300.0 gr projectile in 0.376" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. 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, ReloadSwiss RS 60, ReloadSwiss RS 52 rank at the top here: for .375 H&H Mag. with the .376 | 300gr | Peregrine VRG-1 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.