Load Specifications
Bullet Manufacturer:Woodleigh
Bullet Weight:350 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:1:6.0
Load data in caliber .375 H&H Mag. with .375 | 350gr | Woodleigh PP SN bullet and 106 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, Hodgdon Superformance and Alliant Reloder-17.
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>> | 84% | 55,854 psi | 90% | 2175 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 54,505 psi | 87% | 2205 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 56,159 psi | 90% | 2260 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 53,534 psi | 86% | 2218 fps | 98.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 41,031 psi | 66% | 2146 fps | 97.6% |
| Accurate 4064 | <<locked>> | 90% | 54,346 psi | 87% | 2244 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 53,693 psi | 86% | 2326 fps | 100% |
| ADI AR 2206H | <<locked>> | 86% | 54,781 psi | 88% | 2270 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 55,695 psi | 89% | 2274 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 49,168 psi | 79% | 2267 fps | 96.6% |
| ADI Benchmark 8208 | <<locked>> | 84% | 53,824 psi | 86% | 2228 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 54,766 psi | 88% | 2198 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 54,288 psi | 87% | 2379 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 48,573 psi | 78% | 2264 fps | 96.6% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 48,573 psi | 78% | 2264 fps | 96.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 55,622 psi | 89% | 2290 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 56,376 psi | 90% | 2313 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 55,042 psi | 88% | 2369 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 96% | 56,318 psi | 90% | 2398 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 47,848 psi | 77% | 2257 fps | 96.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,349 psi | 63% | 2169 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 34,896 psi | 56% | 2093 fps | 96.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 43,700 psi | 70% | 2306 fps | 99.3% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 54,505 psi | 87% | 2293 fps | 100% |
| Bofors RP3 | <<locked>> | 92% | 56,434 psi | 90% | 2306 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 56,304 psi | 90% | 2287 fps | 98.7% |
| Hodgdon Benchmark | <<locked>> | 84% | 55,477 psi | 89% | 2208 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 52,968 psi | 85% | 2257 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 55,042 psi | 88% | 2339 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 53,896 psi | 86% | 2280 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 96% | 53,113 psi | 85% | 2326 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 94% | 54,041 psi | 87% | 2293 fps | 98% |
| Hodgdon H4895 | <<locked>> | 86% | 55,347 psi | 89% | 2280 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 51,430 psi | 82% | 2267 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 54,607 psi | 88% | 2310 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 53,461 psi | 86% | 2359 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,781 psi | 57% | 1345 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 53,113 psi | 85% | 2241 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 55,463 psi | 89% | 2257 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 55,419 psi | 89% | 2260 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 55,245 psi | 89% | 2247 fps | 99% |
| IMR 4350 | <<locked>> | 98% | 53,127 psi | 85% | 2270 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 94% | 54,882 psi | 88% | 2270 fps | 98.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 54,360 psi | 87% | 2320 fps | 100% |
| IMR 4895 | <<locked>> | 88% | 54,302 psi | 87% | 2293 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 53,824 psi | 86% | 2228 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 54,462 psi | 87% | 2251 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 54,389 psi | 87% | 2211 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 55,143 psi | 88% | 2254 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 54,186 psi | 87% | 2267 fps | 99.6% |
| Lovex S070 | <<locked>> | 98% | 54,969 psi | 88% | 2297 fps | 99.1% |
| Norma 201 | <<locked>> | 86% | 53,592 psi | 86% | 2224 fps | 100% |
| Norma 202 | <<locked>> | 86% | 54,012 psi | 87% | 2221 fps | 100% |
| Norma 203B | <<locked>> | 90% | 55,535 psi | 89% | 2300 fps | 100% |
| Norma 204 | <<locked>> | 98% | 53,577 psi | 86% | 2313 fps | 97.4% |
| Norma MRPᴾ | <<locked>> | 100% | 43,758 psi | 70% | 2270 fps | 97.2% |
| Norma URP | <<locked>> | 98% | 52,895 psi | 85% | 2316 fps | 100% |
| Ramshot Big Game | <<locked>> | 90% | 56,086 psi | 90% | 2326 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 55,085 psi | 88% | 2359 fps | 99.6% |
| Ramshot TAC | <<locked>> | 84% | 53,911 psi | 86% | 2254 fps | 99.7% |
| Ramshot Wild Boar | <<locked>> | 84% | 53,505 psi | 86% | 2264 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 54,636 psi | 88% | 2234 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,187 psi | 58% | 1375 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 54,027 psi | 87% | 2267 fps | 99.2% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 53,388 psi | 86% | 2326 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 56,231 psi | 90% | 2395 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 53,316 psi | 85% | 2346 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 53,011 psi | 85% | 2372 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 84% | 54,737 psi | 88% | 2205 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 54,099 psi | 87% | 2224 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 56,318 psi | 90% | 2300 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 50,589 psi | 81% | 2241 fps | 95.7% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 46,557 psi | 75% | 2244 fps | 96.5% |
| Rottweil R 907 | <<locked>> | 96% | 56,304 psi | 90% | 2287 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 96% | 54,186 psi | 87% | 2267 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 86% | 54,462 psi | 87% | 2251 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 55,143 psi | 88% | 2254 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 54,969 psi | 88% | 2297 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 54,375 psi | 87% | 2313 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 56,072 psi | 90% | 2280 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 53,258 psi | 85% | 2254 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 55,230 psi | 89% | 2169 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 55,201 psi | 89% | 2169 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 54,404 psi | 87% | 2228 fps | 98.8% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 46,137 psi | 74% | 2238 fps | 96.3% |
| Somchem S321 | <<locked>> | 82% | 54,955 psi | 88% | 2257 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 54,476 psi | 87% | 2169 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 55,593 psi | 89% | 2270 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 53,142 psi | 85% | 2257 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 50,865 psi | 82% | 2316 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 47,224 psi | 76% | 2228 fps | 97.4% |
| Vihtavuori N130 | <<locked>> | 82% | 55,100 psi | 88% | 2136 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 55,506 psi | 89% | 2156 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 53,983 psi | 87% | 2192 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 54,476 psi | 87% | 2205 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 54,505 psi | 87% | 2238 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 55,332 psi | 89% | 2310 fps | 100% |
| Vihtavuori N530 | <<locked>> | 84% | 54,360 psi | 87% | 2231 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 56,159 psi | 90% | 2247 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 54,317 psi | 87% | 2316 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 43,250 psi | 69% | 2231 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 55,463 psi | 89% | 2293 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 54,259 psi | 87% | 2270 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 53,359 psi | 86% | 2329 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,186 psi | 56% | 2188 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 86% | 53,026 psi | 85% | 2260 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% | 49,617 psi | 80% | 2106 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 42,264 psi | 68% | 2057 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 49,182 psi | 79% | 2178 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 41,365 psi | 66% | 2044 fps | 95.6% |
| Accurate 3100 | <<locked>> | 94% | 33,620 psi | 54% | 2018 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 40,001 psi | 64% | 2060 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 29,298 psi | 47% | 1932 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 45,629 psi | 73% | 2152 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 38,725 psi | 62% | 2034 fps | 98.9% |
| ADI AR 2209 | <<locked>> | 96% | 43,221 psi | 69% | 2175 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 80% | 47,703 psi | 76% | 2152 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 48,327 psi | 77% | 2129 fps | 100% |
| Alliant Power Pro 2000-MR | 59.1 gr | 80% | 41,408 psi | 66% | 2188 fps | 99.4% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 43,033 psi | 69% | 2178 fps | 95.2% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 43,033 psi | 69% | 2178 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,566 psi | 62% | 2054 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,321 psi | 66% | 2106 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 29,936 psi | 48% | 1942 fps | 96% |
| Alliant Reloder-17 | 58.2 gr | 80% | 33,156 psi | 53% | 2044 fps | 98.8% |
| Alliant Reloder-19 | <<locked>> | 96% | 42,467 psi | 68% | 2172 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 86% | 25,860 psi | 41% | 1877 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 98% | 32,866 psi | 53% | 2047 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 90% | 31,169 psi | 50% | 2057 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 44,701 psi | 72% | 2159 fps | 99.5% |
| Bofors RP3 | <<locked>> | 80% | 38,189 psi | 61% | 2060 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 39,102 psi | 63% | 2037 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 49,269 psi | 79% | 2136 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 46,485 psi | 75% | 2175 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 51,445 psi | 82% | 2297 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 38,957 psi | 62% | 2064 fps | 98.1% |
| Hodgdon H414 | <<locked>> | 84% | 36,027 psi | 58% | 2060 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 86% | 42,076 psi | 67% | 2123 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 46,079 psi | 74% | 2159 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 27,514 psi | 44% | 1867 fps | 96.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 41,887 psi | 67% | 2142 fps | 100% |
| Hodgdon Superformance | 67.6 gr | 88% | 40,350 psi | 65% | 2162 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,643 psi | 43% | 1198 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,135 psi | 71% | 2119 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 45,861 psi | 74% | 2146 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,654 psi | 65% | 2057 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,120 psi | 69% | 2077 fps | 97% |
| IMR 4350 | <<locked>> | 88% | 39,102 psi | 63% | 2064 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 82% | 38,247 psi | 61% | 2024 fps | 95.6% |
| IMR 4831 | <<locked>> | 80% | 28,543 psi | 46% | 1903 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 42,351 psi | 68% | 2129 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 47,703 psi | 76% | 2152 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 44,875 psi | 72% | 2133 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,585 psi | 73% | 2096 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 40,770 psi | 65% | 2064 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 33,504 psi | 54% | 1942 fps | 95.7% |
| Lovex S070 | <<locked>> | 84% | 35,810 psi | 57% | 2008 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 44,773 psi | 72% | 2110 fps | 100% |
| Norma 202 | <<locked>> | 80% | 45,078 psi | 72% | 2113 fps | 100% |
| Norma 203B | <<locked>> | 80% | 40,712 psi | 65% | 2096 fps | 99.6% |
| Norma 204 | <<locked>> | 92% | 43,961 psi | 70% | 2178 fps | 95.3% |
| Norma MRP | <<locked>> | 96% | 38,406 psi | 62% | 2175 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 29,863 psi | 48% | 1936 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 40,147 psi | 64% | 2110 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 86% | 35,244 psi | 57% | 2054 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 47,384 psi | 76% | 2165 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 80% | 47,050 psi | 75% | 2182 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 80% | 51,184 psi | 82% | 2192 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,093 psi | 43% | 1230 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 39,291 psi | 63% | 2051 fps | 96.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 43,598 psi | 70% | 2192 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 35,288 psi | 57% | 2093 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 29,008 psi | 47% | 1942 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 31,256 psi | 50% | 1991 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 48,776 psi | 78% | 2133 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,583 psi | 68% | 2073 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 35,969 psi | 58% | 2018 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 98% | 47,703 psi | 76% | 2201 fps | 95% |
| Rottweil R 905 | <<locked>> | 98% | 43,613 psi | 70% | 2198 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 84% | 39,102 psi | 63% | 2037 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 33,504 psi | 54% | 1942 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 44,875 psi | 72% | 2133 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 40,770 psi | 65% | 2064 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 35,810 psi | 57% | 2008 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,811 psi | 59% | 2060 fps | 99% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 45,774 psi | 73% | 2146 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,034 psi | 71% | 2129 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 45,890 psi | 74% | 2060 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,276 psi | 61% | 1959 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 37,043 psi | 59% | 1982 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 43,221 psi | 69% | 2195 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 51,445 psi | 82% | 2215 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 45,672 psi | 73% | 2064 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 45,527 psi | 73% | 2142 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 36,825 psi | 59% | 2021 fps | 99.3% |
| Somchem S365 | <<locked>> | 80% | 26,745 psi | 43% | 1900 fps | 98% |
| Somchem S385 | <<locked>> | 94% | 38,928 psi | 62% | 2100 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 51,750 psi | 83% | 2096 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 46,253 psi | 74% | 2051 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,061 psi | 67% | 2047 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,685 psi | 68% | 2060 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,969 psi | 56% | 1969 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 31,140 psi | 50% | 1936 fps | 96.2% |
| Vihtavuori N530 | <<locked>> | 80% | 47,805 psi | 77% | 2149 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 41,002 psi | 66% | 2057 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 30,560 psi | 49% | 1939 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 86% | 27,673 psi | 44% | 1939 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,821 psi | 49% | 1919 fps | 98.1% |
| Winchester 748 | <<locked>> | 80% | 47,529 psi | 76% | 2188 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 36,027 psi | 58% | 2060 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 90% | 25,730 psi | 41% | 1939 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 43,511 psi | 70% | 2133 fps | 99.9% |
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 106 powders for .375 H&H Mag. loaded with the .375 | 350gr | Woodleigh PP SN. Alliant Reloder-17 delivers the highest muzzle velocity at 2,398 fps; across all powders the maximum-charge window runs from 1,345 fps to 2,398 fps. Accurate 3100 gives the best case fill at 100 %, and 106 of the 106 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 350.0 gr projectile in 0.375" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .375 H&H Mag. with the .375 | 350gr | Woodleigh PP SN 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.