Load Specifications
Bullet Manufacturer:Rhino Bullets
Bullet Weight:300 gr
Bullet Diameter:0.374"
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 .374 | 300gr | Rhino Solid Shank bullet and 106 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Power Pro 2000-MR 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>> | 86% | 54,070 psi | 87% | 2356 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 55,825 psi | 90% | 2425 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 55,245 psi | 89% | 2418 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 53,983 psi | 87% | 2438 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 55,114 psi | 88% | 2415 fps | 96.8% |
| Accurate 4064 | <<locked>> | 94% | 55,042 psi | 88% | 2457 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 50,488 psi | 81% | 2480 fps | 99.2% |
| Accurate LT-30 | <<locked>> | 82% | 56,362 psi | 90% | 2343 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 56,333 psi | 90% | 2490 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 53,882 psi | 86% | 2444 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 88% | 55,564 psi | 89% | 2448 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 55,796 psi | 89% | 2421 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 53,824 psi | 86% | 2493 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 55,753 psi | 89% | 2595 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 53,258 psi | 85% | 2461 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 53,809 psi | 86% | 2359 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 54,085 psi | 87% | 2480 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,356 psi | 79% | 2484 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 98% | 53,635 psi | 86% | 2569 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,998 psi | 56% | 2251 fps | 97.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 38,493 psi | 62% | 2375 fps | 96.2% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 55,521 psi | 89% | 2346 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 55,840 psi | 90% | 2503 fps | 99.7% |
| Bofors RP3 | <<locked>> | 94% | 53,548 psi | 86% | 2474 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 54,302 psi | 87% | 2444 fps | 97% |
| Hodgdon Benchmark | <<locked>> | 86% | 54,157 psi | 87% | 2388 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 54,346 psi | 87% | 2474 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 52,620 psi | 84% | 2513 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 84% | 56,144 psi | 90% | 2438 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 53,693 psi | 86% | 2421 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 55,056 psi | 88% | 2487 fps | 99.3% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 53,650 psi | 86% | 2523 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 98% | 55,027 psi | 88% | 2493 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 88% | 53,505 psi | 86% | 2454 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,629 psi | 73% | 2379 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 55,666 psi | 89% | 2526 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 54,940 psi | 88% | 2559 fps | 97.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,244 psi | 57% | 1457 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 54,723 psi | 88% | 2457 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 56,434 psi | 90% | 2477 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 53,374 psi | 86% | 2428 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 90% | 53,722 psi | 86% | 2411 fps | 97.4% |
| IMR 4198 | <<locked>> | 82% | 54,143 psi | 87% | 2320 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 50,807 psi | 81% | 2421 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 98% | 56,173 psi | 90% | 2474 fps | 97.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 47,964 psi | 77% | 2428 fps | 99% |
| IMR 4895 | <<locked>> | 92% | 55,434 psi | 89% | 2507 fps | 100% |
| IMR 8208 XBR | <<locked>> | 88% | 55,564 psi | 89% | 2448 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 55,796 psi | 89% | 2434 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 55,622 psi | 89% | 2467 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 56,072 psi | 90% | 2425 fps | 100% |
| Lovex S062 | <<locked>> | 94% | 56,217 psi | 90% | 2467 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 55,085 psi | 88% | 2464 fps | 98.8% |
| Lovex S070ᴾ | <<locked>> | 100% | 52,475 psi | 84% | 2451 fps | 97.5% |
| Norma 201 | <<locked>> | 90% | 55,027 psi | 88% | 2441 fps | 100% |
| Norma 202 | <<locked>> | 90% | 55,376 psi | 89% | 2441 fps | 100% |
| Norma 203B | <<locked>> | 92% | 53,243 psi | 85% | 2470 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 49,966 psi | 80% | 2470 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 92% | 53,563 psi | 86% | 2493 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 49,037 psi | 79% | 2464 fps | 97.6% |
| Ramshot TAC | <<locked>> | 88% | 55,927 psi | 90% | 2467 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 88% | 55,056 psi | 88% | 2480 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 84% | 52,997 psi | 85% | 2405 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,520 psi | 57% | 1493 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 55,143 psi | 88% | 2431 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 55,477 psi | 89% | 2470 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 54,288 psi | 87% | 2539 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 53,563 psi | 86% | 2569 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 50,024 psi | 80% | 2500 fps | 99% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 50,575 psi | 81% | 2520 fps | 98.7% |
| Rottweil R 901 | <<locked>> | 88% | 56,086 psi | 90% | 2421 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 55,521 psi | 89% | 2438 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 53,417 psi | 86% | 2464 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 54,302 psi | 87% | 2444 fps | 97% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 55,085 psi | 88% | 2464 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 90% | 55,622 psi | 89% | 2467 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 56,217 psi | 90% | 2467 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 52,475 psi | 84% | 2451 fps | 97.5% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 54,839 psi | 88% | 2405 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 55,274 psi | 89% | 2523 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 54,636 psi | 88% | 2375 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 53,954 psi | 87% | 2444 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 54,708 psi | 88% | 2467 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 53,780 psi | 86% | 2346 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 53,388 psi | 86% | 2346 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 55,753 psi | 89% | 2425 fps | 97.7% |
| Somchem S321 | <<locked>> | 84% | 53,214 psi | 85% | 2434 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 56,057 psi | 90% | 2385 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 53,447 psi | 86% | 2438 fps | 99.9% |
| Somchem S355 | <<locked>> | 96% | 54,041 psi | 87% | 2467 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,599 psi | 72% | 2428 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 53,650 psi | 86% | 2316 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 53,867 psi | 86% | 2336 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 54,708 psi | 88% | 2402 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 55,956 psi | 90% | 2421 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 55,419 psi | 89% | 2444 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 52,692 psi | 84% | 2470 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 88% | 55,970 psi | 90% | 2444 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 53,925 psi | 86% | 2421 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 51,488 psi | 83% | 2474 fps | 99.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,478 psi | 60% | 2320 fps | 97.5% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 53,388 psi | 86% | 2457 fps | 100% |
| Winchester 748 | <<locked>> | 88% | 55,535 psi | 89% | 2490 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 53,925 psi | 86% | 2526 fps | 97.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 31,183 psi | 50% | 2231 fps | 96.5% |
| Winchester StaBALL Match | <<locked>> | 90% | 54,433 psi | 87% | 2474 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% | 44,976 psi | 72% | 2241 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 48,878 psi | 78% | 2336 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 37,420 psi | 60% | 2175 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,106 psi | 71% | 2303 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 48,588 psi | 78% | 2326 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 35,389 psi | 57% | 2165 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 33,489 psi | 54% | 2192 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 53,243 psi | 85% | 2303 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 41,336 psi | 66% | 2264 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 80% | 35,172 psi | 56% | 2136 fps | 96.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,352 psi | 70% | 2274 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 80% | 42,975 psi | 69% | 2264 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 50,488 psi | 81% | 2448 fps | 99.9% |
| Alliant Power Pro 2000-MR | 60.6 gr | 80% | 37,231 psi | 60% | 2283 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,403 psi | 55% | 2152 fps | 98% |
| Alliant Reloder-10x | <<locked>> | 80% | 50,734 psi | 81% | 2320 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,130 psi | 60% | 2208 fps | 97.3% |
| Alliant Reloder-16 | <<locked>> | 88% | 34,360 psi | 55% | 2201 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 29,762 psi | 48% | 2119 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 94% | 29,385 psi | 47% | 2116 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 98% | 36,013 psi | 58% | 2320 fps | 95.2% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 52,199 psi | 84% | 2306 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,147 psi | 64% | 2264 fps | 97.5% |
| Bofors RP3 | <<locked>> | 80% | 33,866 psi | 54% | 2156 fps | 98% |
| Bofors RP7 | <<locked>> | 92% | 45,121 psi | 72% | 2310 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,223 psi | 73% | 2264 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,698 psi | 67% | 2290 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 45,730 psi | 73% | 2411 fps | 99.1% |
| Hodgdon H322 | <<locked>> | 80% | 49,443 psi | 79% | 2352 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 50,299 psi | 81% | 2379 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 34,867 psi | 56% | 2156 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 94% | 44,309 psi | 71% | 2382 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 94% | 48,457 psi | 78% | 2398 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 41,655 psi | 67% | 2277 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 29,515 psi | 47% | 2067 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,391 psi | 60% | 2247 fps | 98.8% |
| Hodgdon Superformance | <<locked>> | 96% | 47,776 psi | 77% | 2454 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,223 psi | 42% | 1299 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,001 psi | 64% | 2234 fps | 98.8% |
| IMR 3031 | <<locked>> | 80% | 40,988 psi | 66% | 2270 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,898 psi | 59% | 2165 fps | 97.3% |
| IMR 4166 Enduron | <<locked>> | 84% | 44,643 psi | 72% | 2274 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 51,010 psi | 82% | 2283 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 47,747 psi | 77% | 2375 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 90% | 44,193 psi | 71% | 2293 fps | 95.3% |
| IMR 4831 | <<locked>> | 88% | 32,547 psi | 52% | 2152 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 38,014 psi | 61% | 2234 fps | 98.1% |
| IMR 8208 XBR | <<locked>> | 80% | 43,352 psi | 70% | 2274 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 80% | 48,660 psi | 78% | 2346 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 39,972 psi | 64% | 2247 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 41,655 psi | 67% | 2211 fps | 98.7% |
| Lovex S062 | <<locked>> | 80% | 36,637 psi | 59% | 2169 fps | 98.8% |
| Lovex S065 | <<locked>> | 88% | 38,435 psi | 62% | 2205 fps | 95.3% |
| Lovex S070 | <<locked>> | 94% | 43,656 psi | 70% | 2316 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 40,422 psi | 65% | 2224 fps | 99.4% |
| Norma 202 | <<locked>> | 80% | 40,538 psi | 65% | 2231 fps | 100% |
| Norma 203B | <<locked>> | 80% | 36,521 psi | 59% | 2198 fps | 97.7% |
| Norma URP | <<locked>> | 88% | 34,214 psi | 55% | 2195 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 35,853 psi | 57% | 2208 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 94% | 40,524 psi | 65% | 2320 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 43,062 psi | 69% | 2274 fps | 96.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,438 psi | 68% | 2293 fps | 98.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,702 psi | 75% | 2313 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,382 psi | 42% | 1329 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,559 psi | 78% | 2343 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 40,248 psi | 65% | 2238 fps | 95% |
| ReloadSwiss RS 52 | 58.7 gr | 80% | 38,406 psi | 62% | 2290 fps | 97.7% |
| ReloadSwiss RS 60 | 59.7 gr | 80% | 31,705 psi | 51% | 2178 fps | 98.8% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 35,650 psi | 57% | 2254 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 38,856 psi | 62% | 2313 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 44,338 psi | 71% | 2260 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 38,493 psi | 62% | 2182 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 80% | 31,937 psi | 51% | 2110 fps | 97.1% |
| Rottweil R 907 | <<locked>> | 92% | 45,121 psi | 72% | 2310 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 88% | 38,435 psi | 62% | 2205 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,972 psi | 64% | 2247 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 36,637 psi | 59% | 2169 fps | 98.8% |
| Shooters World SW4350 | <<locked>> | 94% | 43,656 psi | 70% | 2316 fps | 95.6% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 51,300 psi | 82% | 2359 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,822 psi | 53% | 2149 fps | 96.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 51,532 psi | 83% | 2339 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 41,191 psi | 66% | 2251 fps | 96.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,697 psi | 64% | 2238 fps | 98.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,090 psi | 67% | 2188 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,766 psi | 56% | 2073 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 42,830 psi | 69% | 2244 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 46,514 psi | 75% | 2343 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 41,495 psi | 67% | 2188 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,915 psi | 66% | 2251 fps | 98.5% |
| Somchem S355 | <<locked>> | 80% | 32,866 psi | 53% | 2116 fps | 97.1% |
| Somchem S365 | <<locked>> | 82% | 25,353 psi | 41% | 2008 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 47,587 psi | 76% | 2241 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,293 psi | 68% | 2182 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,782 psi | 61% | 2172 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,522 psi | 62% | 2178 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,285 psi | 50% | 2064 fps | 97.9% |
| Vihtavuori N160 | <<locked>> | 86% | 33,562 psi | 54% | 2149 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 43,323 psi | 69% | 2270 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 36,912 psi | 59% | 2172 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 88% | 35,012 psi | 56% | 2198 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 94% | 31,038 psi | 50% | 2178 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 29,660 psi | 48% | 2041 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 42,453 psi | 68% | 2306 fps | 99.9% |
| Winchester 760 | <<locked>> | 94% | 44,309 psi | 71% | 2382 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 98% | 29,283 psi | 47% | 2175 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,059 psi | 63% | 2241 fps | 98.7% |
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 117 powders for .375 H&H Mag. loaded with the .374 | 300gr | Rhino Solid Shank. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,595 fps; across all powders the maximum-charge window runs from 1,457 fps to 2,595 fps. Accurate 3100 gives the best case fill at 100 %, and 117 of the 117 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 47–90 %, leaving at least 10 % headroom. The 300.0 gr projectile in 0.374" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, ADI AR 2209 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. ReloadSwiss RS 60, Alliant Power Pro 2000-MR, ReloadSwiss RS 52 rank at the top here: for .375 H&H Mag. with the .374 | 300gr | Rhino Solid Shank they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, ADI AR 2209, Alliant Reloder-19 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.