Load Specifications
Bullet Manufacturer:Nosler
Bullet Weight:300 gr
Bullet Diameter:0.375"
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:1:16.0
Load data in caliber .375 H&H Mag. with .375 | 300gr | Nosler CT FailSafe bullet and 109 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 ReloadSwiss RS 60.
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% | 54,592 psi | 88% | 2343 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 56,434 psi | 90% | 2408 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 55,274 psi | 89% | 2398 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 56,202 psi | 90% | 2451 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 56,202 psi | 90% | 2451 fps | 100% |
| Accurate 2700 | <<locked>> | 96% | 53,171 psi | 85% | 2352 fps | 95.9% |
| Accurate 4064 | <<locked>> | 96% | 54,897 psi | 88% | 2434 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 46,876 psi | 75% | 2405 fps | 98.5% |
| Accurate LT-30 | <<locked>> | 82% | 54,244 psi | 87% | 2293 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 54,665 psi | 88% | 2316 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 53,417 psi | 86% | 2425 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 96% | 54,186 psi | 87% | 2421 fps | 99.5% |
| ADI AR 2219 | <<locked>> | 82% | 54,737 psi | 88% | 2398 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 56,115 psi | 90% | 2431 fps | 100% |
| Alliant AR-Comp | <<locked>> | 90% | 56,028 psi | 90% | 2405 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 54,418 psi | 87% | 2477 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 56,159 psi | 90% | 2572 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 53,577 psi | 86% | 2441 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 54,520 psi | 87% | 2346 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 54,447 psi | 87% | 2461 fps | 99.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 46,760 psi | 75% | 2415 fps | 98.6% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 53,809 psi | 86% | 2543 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 33,054 psi | 53% | 2182 fps | 96.3% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 53,113 psi | 85% | 2293 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 56,376 psi | 90% | 2484 fps | 99.6% |
| Bofors RP3 | <<locked>> | 96% | 53,766 psi | 86% | 2454 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 54,737 psi | 88% | 2421 fps | 96.6% |
| Hodgdon Benchmark | <<locked>> | 88% | 54,998 psi | 88% | 2375 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 54,766 psi | 88% | 2457 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 52,997 psi | 85% | 2493 fps | 99.6% |
| Hodgdon H322 | <<locked>> | 88% | 56,057 psi | 90% | 2415 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 54,070 psi | 87% | 2405 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 55,288 psi | 89% | 2464 fps | 99.1% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 55,840 psi | 90% | 2526 fps | 97.6% |
| Hodgdon H4198 | <<locked>> | 82% | 56,159 psi | 90% | 2333 fps | 100% |
| Hodgdon H4895 | <<locked>> | 90% | 53,896 psi | 86% | 2438 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 42,743 psi | 69% | 2310 fps | 99% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 55,738 psi | 89% | 2503 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 51,634 psi | 83% | 2480 fps | 96% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,983 psi | 56% | 1434 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 53,882 psi | 86% | 2421 fps | 99.9% |
| IMR 3031 | <<locked>> | 94% | 54,955 psi | 88% | 2441 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 56,028 psi | 90% | 2438 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 98% | 56,130 psi | 90% | 2411 fps | 97.4% |
| IMR 4198 | <<locked>> | 84% | 54,766 psi | 88% | 2306 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 53,519 psi | 86% | 2408 fps | 96.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 39,958 psi | 64% | 2277 fps | 97.1% |
| IMR 4895 | <<locked>> | 94% | 55,782 psi | 89% | 2487 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 90% | 56,115 psi | 90% | 2431 fps | 100% |
| Lovex D073.4 | <<locked>> | 84% | 55,216 psi | 89% | 2395 fps | 100% |
| Lovex D073.5 | <<locked>> | 86% | 56,304 psi | 90% | 2418 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 55,927 psi | 90% | 2448 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 53,780 psi | 86% | 2365 fps | 99.8% |
| Lovex S062 | <<locked>> | 94% | 53,345 psi | 86% | 2408 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 52,286 psi | 84% | 2402 fps | 98% |
| Lovex S070ᴾ | <<locked>> | 100% | 49,530 psi | 79% | 2382 fps | 96.5% |
| Norma 201 | <<locked>> | 92% | 55,506 psi | 89% | 2421 fps | 100% |
| Norma 202 | <<locked>> | 92% | 55,811 psi | 89% | 2425 fps | 100% |
| Norma 203B | <<locked>> | 94% | 53,592 psi | 86% | 2451 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 46,876 psi | 75% | 2402 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 94% | 53,766 psi | 86% | 2474 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 46,122 psi | 74% | 2392 fps | 96.5% |
| Ramshot TAC | <<locked>> | 88% | 53,156 psi | 85% | 2402 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 90% | 55,637 psi | 89% | 2461 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 86% | 53,896 psi | 86% | 2392 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,244 psi | 57% | 1467 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 55,767 psi | 89% | 2415 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 55,941 psi | 90% | 2448 fps | 98% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 54,418 psi | 87% | 2520 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 53,838 psi | 86% | 2546 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 46,499 psi | 75% | 2425 fps | 98.1% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 47,703 psi | 76% | 2444 fps | 97.7% |
| Rottweil R 901 | <<locked>> | 88% | 53,461 psi | 86% | 2365 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 55,854 psi | 90% | 2418 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 53,621 psi | 86% | 2444 fps | 100% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 54,737 psi | 88% | 2421 fps | 96.6% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 52,286 psi | 84% | 2402 fps | 98% |
| Shooters World Match Rifle | <<locked>> | 92% | 55,927 psi | 90% | 2448 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 53,345 psi | 86% | 2408 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 49,530 psi | 79% | 2382 fps | 96.5% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 55,666 psi | 89% | 2388 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 55,071 psi | 88% | 2411 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 55,332 psi | 89% | 2500 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 55,419 psi | 89% | 2362 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 54,650 psi | 88% | 2428 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 55,201 psi | 89% | 2448 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 54,302 psi | 87% | 2329 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 53,780 psi | 86% | 2326 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 52,736 psi | 85% | 2359 fps | 96.8% |
| Somchem S321 | <<locked>> | 86% | 53,751 psi | 86% | 2418 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 53,417 psi | 86% | 2333 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 54,070 psi | 87% | 2421 fps | 99.8% |
| Somchem S355 | <<locked>> | 98% | 54,085 psi | 87% | 2441 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,843 psi | 67% | 2359 fps | 99.7% |
| Unknown powderᴾ | <<locked>> | 100% | 51,358 psi | 82% | 2454 fps | 98.5% |
| Vihtavuori N130 | <<locked>> | 86% | 54,360 psi | 87% | 2303 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 54,317 psi | 87% | 2320 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 55,187 psi | 88% | 2388 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 56,376 psi | 90% | 2405 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 55,811 psi | 89% | 2428 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 49,342 psi | 79% | 2398 fps | 98.6% |
| Vihtavuori N530 | <<locked>> | 88% | 53,214 psi | 85% | 2385 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 54,534 psi | 87% | 2408 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 48,414 psi | 78% | 2405 fps | 98.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 34,838 psi | 56% | 2244 fps | 96.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 50,328 psi | 81% | 2388 fps | 99.8% |
| Winchester 748 | <<locked>> | 86% | 53,084 psi | 85% | 2438 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 55,840 psi | 90% | 2526 fps | 97.6% |
| Winchester StaBALL Match | <<locked>> | 84% | 52,750 psi | 85% | 2431 fps | 99.9% |
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% | 42,641 psi | 68% | 2188 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 46,398 psi | 74% | 2283 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 35,157 psi | 56% | 2119 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 40,016 psi | 64% | 2231 fps | 99.9% |
| Accurate 2520 | <<locked>> | 80% | 40,016 psi | 64% | 2231 fps | 99.9% |
| Accurate 2700 | <<locked>> | 94% | 49,850 psi | 80% | 2310 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 33,272 psi | 53% | 2110 fps | 99.6% |
| Accurate 4350 | <<locked>> | 92% | 35,534 psi | 57% | 2215 fps | 95.8% |
| Accurate LT-30 | <<locked>> | 80% | 51,053 psi | 82% | 2254 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 51,445 psi | 82% | 2274 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 39,218 psi | 63% | 2205 fps | 98% |
| ADI AR 2208 | <<locked>> | 80% | 33,431 psi | 54% | 2077 fps | 95.5% |
| ADI AR 2219 | <<locked>> | 80% | 51,169 psi | 82% | 2356 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,205 psi | 66% | 2215 fps | 99.2% |
| Alliant AR-Comp | <<locked>> | 80% | 40,393 psi | 65% | 2211 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 47,776 psi | 77% | 2385 fps | 99.7% |
| Alliant Power Pro 2000-MR | 57.3 gr | 80% | 35,259 psi | 57% | 2215 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,489 psi | 52% | 2096 fps | 97.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 48,167 psi | 77% | 2267 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,085 psi | 56% | 2146 fps | 96.3% |
| Alliant Reloder-16 | <<locked>> | 90% | 34,592 psi | 55% | 2182 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 82% | 29,950 psi | 48% | 2103 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 98% | 31,038 psi | 50% | 2133 fps | 95.3% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 49,922 psi | 80% | 2254 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 38,029 psi | 61% | 2205 fps | 96.6% |
| Bofors RP3 | <<locked>> | 80% | 31,850 psi | 51% | 2096 fps | 97% |
| Bofors RP7 | <<locked>> | 96% | 48,283 psi | 77% | 2329 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,323 psi | 69% | 2211 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,320 psi | 63% | 2231 fps | 99.3% |
| Hodgdon CFE223 | <<locked>> | 80% | 43,047 psi | 69% | 2343 fps | 98.4% |
| Hodgdon H322 | <<locked>> | 80% | 43,598 psi | 70% | 2251 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 50,444 psi | 81% | 2359 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 37,478 psi | 60% | 2188 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 94% | 45,585 psi | 73% | 2379 fps | 95.4% |
| Hodgdon H4198 | <<locked>> | 80% | 52,837 psi | 85% | 2290 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 39,494 psi | 63% | 2215 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 29,617 psi | 47% | 2047 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,257 psi | 53% | 2142 fps | 97.4% |
| Hodgdon Superformance | <<locked>> | 98% | 48,095 psi | 77% | 2428 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,889 psi | 42% | 1276 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 35,186 psi | 56% | 2119 fps | 97.4% |
| IMR 3031 | <<locked>> | 80% | 35,389 psi | 57% | 2159 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 32,750 psi | 53% | 2057 fps | 95.5% |
| IMR 4166 Enduron | <<locked>> | 92% | 47,021 psi | 75% | 2283 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 48,805 psi | 78% | 2234 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 47,355 psi | 76% | 2320 fps | 95.5% |
| IMR 4831 | <<locked>> | 96% | 35,302 psi | 57% | 2192 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 35,897 psi | 58% | 2175 fps | 97.2% |
| IMR 8208 XBR | <<locked>> | 80% | 41,205 psi | 66% | 2215 fps | 99.2% |
| Lovex D073.4 | <<locked>> | 80% | 48,109 psi | 77% | 2303 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 46,122 psi | 74% | 2287 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 37,565 psi | 60% | 2188 fps | 99.7% |
| Lovex S060 | <<locked>> | 80% | 39,813 psi | 64% | 2156 fps | 98.1% |
| Lovex S062 | <<locked>> | 80% | 34,708 psi | 56% | 2110 fps | 98.1% |
| Lovex S065 | <<locked>> | 92% | 41,017 psi | 66% | 2228 fps | 95.6% |
| Lovex S070 | <<locked>> | 96% | 43,743 psi | 70% | 2290 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 38,406 psi | 62% | 2169 fps | 98.8% |
| Norma 202 | <<locked>> | 80% | 38,508 psi | 62% | 2178 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 34,490 psi | 55% | 2139 fps | 96.8% |
| Norma URP | <<locked>> | 92% | 36,463 psi | 58% | 2221 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 33,852 psi | 54% | 2146 fps | 96.2% |
| Ramshot Hunter | <<locked>> | 98% | 43,308 psi | 69% | 2346 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 41,046 psi | 66% | 2215 fps | 95.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 40,190 psi | 64% | 2234 fps | 98.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 44,483 psi | 71% | 2257 fps | 98.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,237 psi | 42% | 1309 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 46,137 psi | 74% | 2287 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 43,279 psi | 69% | 2264 fps | 95.4% |
| ReloadSwiss RS 52 | 55.5 gr | 80% | 36,071 psi | 58% | 2224 fps | 96.6% |
| ReloadSwiss RS 60 | 56.4 gr | 80% | 29,892 psi | 48% | 2110 fps | 97.7% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 35,679 psi | 57% | 2231 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 39,073 psi | 63% | 2290 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 42,308 psi | 68% | 2208 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 36,535 psi | 59% | 2126 fps | 98.4% |
| Rottweil R 903 | <<locked>> | 80% | 29,950 psi | 48% | 2047 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 96% | 48,283 psi | 77% | 2329 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 92% | 41,017 psi | 66% | 2228 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,565 psi | 60% | 2188 fps | 99.7% |
| Shooters World Precision | <<locked>> | 80% | 34,708 psi | 56% | 2110 fps | 98.1% |
| Shooters World SW4350 | <<locked>> | 96% | 43,743 psi | 70% | 2290 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 48,820 psi | 78% | 2300 fps | 99.8% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 51,692 psi | 83% | 2369 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 31,053 psi | 50% | 2087 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 49,124 psi | 79% | 2287 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 39,001 psi | 63% | 2188 fps | 95.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,608 psi | 60% | 2175 fps | 97.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,176 psi | 64% | 2136 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,054 psi | 53% | 2024 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 46,151 psi | 74% | 2270 fps | 95.4% |
| Somchem S321 | <<locked>> | 80% | 44,150 psi | 71% | 2283 fps | 99.7% |
| Somchem S335 | <<locked>> | 80% | 39,552 psi | 63% | 2139 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 38,754 psi | 62% | 2192 fps | 97.7% |
| Somchem S355 | <<locked>> | 80% | 31,024 psi | 50% | 2057 fps | 96.1% |
| Somchem S365 | <<locked>> | 86% | 26,992 psi | 43% | 2037 fps | 95.4% |
| Unknown powder | <<locked>> | 90% | 37,478 psi | 60% | 2224 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 45,513 psi | 73% | 2192 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,321 psi | 65% | 2136 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 35,650 psi | 57% | 2119 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 36,405 psi | 58% | 2126 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 29,414 psi | 47% | 2005 fps | 97% |
| Vihtavuori N160 | <<locked>> | 90% | 35,955 psi | 58% | 2175 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 41,147 psi | 66% | 2211 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 80% | 34,853 psi | 56% | 2113 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 90% | 35,056 psi | 56% | 2178 fps | 95% |
| Vihtavuori N555 | <<locked>> | 98% | 32,764 psi | 53% | 2198 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 30,095 psi | 48% | 2028 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 43,294 psi | 69% | 2300 fps | 99.9% |
| Winchester 760 | <<locked>> | 94% | 45,585 psi | 73% | 2379 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,905 psi | 74% | 2333 fps | 99.5% |
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 109 powders for .375 H&H Mag. loaded with the .375 | 300gr | Nosler CT FailSafe. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,572 fps; across all powders the maximum-charge window runs from 1,434 fps to 2,572 fps. Accurate 4350 gives the best case fill at 100 %, and 109 of the 109 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 0.375" calls for a 1:16.0 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 52, ReloadSwiss RS 60 rank at the top here: for .375 H&H Mag. with the .375 | 300gr | Nosler CT FailSafe 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.