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 RN SN bullet and 107 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Superformance, Alliant Reloder-17 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>> | 84% | 56,362 psi | 90% | 2185 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 54,955 psi | 88% | 2211 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 53,084 psi | 85% | 2228 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 54,056 psi | 87% | 2228 fps | 98.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 41,669 psi | 67% | 2159 fps | 97.8% |
| Accurate 4064 | <<locked>> | 90% | 55,056 psi | 88% | 2254 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 54,563 psi | 87% | 2339 fps | 100% |
| ADI AR 2206H | <<locked>> | 86% | 55,376 psi | 89% | 2283 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 56,275 psi | 90% | 2283 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 49,530 psi | 79% | 2280 fps | 96.8% |
| ADI Benchmark 8208 | <<locked>> | 84% | 54,433 psi | 87% | 2241 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 55,550 psi | 89% | 2211 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 54,824 psi | 88% | 2388 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 49,226 psi | 79% | 2280 fps | 96.9% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 49,226 psi | 79% | 2280 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 56,217 psi | 90% | 2300 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 53,548 psi | 86% | 2280 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 55,767 psi | 89% | 2382 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 53,272 psi | 85% | 2369 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 48,501 psi | 78% | 2274 fps | 96.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,943 psi | 64% | 2185 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 35,215 psi | 56% | 2103 fps | 96.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 44,440 psi | 71% | 2323 fps | 99.5% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 55,071 psi | 88% | 2303 fps | 100% |
| Bofors RP3 | <<locked>> | 90% | 53,505 psi | 86% | 2277 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 53,592 psi | 86% | 2260 fps | 98.5% |
| Hodgdon Benchmark | <<locked>> | 84% | 56,101 psi | 90% | 2221 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 53,505 psi | 86% | 2267 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 55,724 psi | 89% | 2352 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 54,447 psi | 87% | 2290 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 96% | 53,867 psi | 86% | 2343 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 94% | 54,505 psi | 87% | 2306 fps | 98.1% |
| Hodgdon H4895 | <<locked>> | 86% | 55,985 psi | 90% | 2290 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 51,953 psi | 83% | 2277 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 55,201 psi | 89% | 2320 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 54,027 psi | 87% | 2372 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,708 psi | 57% | 1348 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 53,693 psi | 86% | 2251 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 56,260 psi | 90% | 2267 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 55,738 psi | 89% | 2270 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 55,724 psi | 89% | 2260 fps | 99.1% |
| IMR 4350 | <<locked>> | 98% | 53,606 psi | 86% | 2280 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 94% | 55,361 psi | 89% | 2283 fps | 99% |
| IMR 4831ᴾ | <<locked>> | 100% | 54,868 psi | 88% | 2329 fps | 100% |
| IMR 4895 | <<locked>> | 88% | 54,926 psi | 88% | 2303 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 54,433 psi | 87% | 2241 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 55,100 psi | 88% | 2260 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 54,766 psi | 88% | 2221 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 55,767 psi | 89% | 2264 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 54,665 psi | 88% | 2277 fps | 99.7% |
| Lovex S070 | <<locked>> | 98% | 55,434 psi | 89% | 2306 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 34,751 psi | 56% | 2041 fps | 96% |
| Norma 201 | <<locked>> | 86% | 54,230 psi | 87% | 2238 fps | 100% |
| Norma 202 | <<locked>> | 86% | 54,679 psi | 88% | 2234 fps | 100% |
| Norma 203B | <<locked>> | 90% | 56,144 psi | 90% | 2310 fps | 100% |
| Norma 204 | <<locked>> | 98% | 53,983 psi | 87% | 2323 fps | 97.5% |
| Norma MRPᴾ | <<locked>> | 100% | 44,309 psi | 71% | 2283 fps | 97.4% |
| Norma URP | <<locked>> | 98% | 53,447 psi | 86% | 2326 fps | 100% |
| Ramshot Big Game | <<locked>> | 88% | 53,026 psi | 85% | 2293 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 55,782 psi | 89% | 2375 fps | 99.7% |
| Ramshot TAC | <<locked>> | 84% | 54,433 psi | 87% | 2264 fps | 99.7% |
| Ramshot Wild Boar | <<locked>> | 84% | 54,085 psi | 87% | 2277 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 55,158 psi | 88% | 2244 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,318 psi | 58% | 1381 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 54,505 psi | 87% | 2277 fps | 99.3% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 54,070 psi | 87% | 2336 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 53,040 psi | 85% | 2362 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 54,085 psi | 87% | 2359 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 53,635 psi | 86% | 2385 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 84% | 55,187 psi | 88% | 2215 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 54,723 psi | 88% | 2234 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 53,359 psi | 86% | 2270 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 51,256 psi | 82% | 2257 fps | 96% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 47,224 psi | 76% | 2257 fps | 96.7% |
| Rottweil R 907 | <<locked>> | 94% | 53,592 psi | 86% | 2260 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 96% | 54,665 psi | 88% | 2277 fps | 99.7% |
| Shooters World Match Rifle | <<locked>> | 86% | 55,100 psi | 88% | 2260 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 55,767 psi | 89% | 2264 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 55,434 psi | 89% | 2306 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 54,926 psi | 88% | 2323 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 52,968 psi | 85% | 2247 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 53,838 psi | 86% | 2264 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 55,680 psi | 89% | 2178 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 55,811 psi | 89% | 2182 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 54,810 psi | 88% | 2238 fps | 98.9% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 46,804 psi | 75% | 2254 fps | 96.6% |
| Somchem S321 | <<locked>> | 82% | 55,564 psi | 89% | 2270 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 55,042 psi | 88% | 2182 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 56,202 psi | 90% | 2280 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 53,737 psi | 86% | 2267 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 51,401 psi | 82% | 2326 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 47,906 psi | 77% | 2244 fps | 97.6% |
| Vihtavuori N130 | <<locked>> | 82% | 55,564 psi | 89% | 2142 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 55,970 psi | 90% | 2162 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 54,433 psi | 87% | 2198 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 55,129 psi | 88% | 2218 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 55,071 psi | 88% | 2247 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 56,130 psi | 90% | 2323 fps | 100% |
| Vihtavuori N530 | <<locked>> | 84% | 54,752 psi | 88% | 2238 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 53,142 psi | 85% | 2218 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 54,998 psi | 88% | 2329 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 43,816 psi | 70% | 2244 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 56,115 psi | 90% | 2303 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 54,679 psi | 88% | 2280 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 53,867 psi | 86% | 2343 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,650 psi | 57% | 2205 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 86% | 53,606 psi | 86% | 2270 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% | 49,879 psi | 80% | 2113 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 42,743 psi | 69% | 2067 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 49,647 psi | 80% | 2188 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 41,713 psi | 67% | 2054 fps | 95.8% |
| Accurate 3100 | <<locked>> | 94% | 34,113 psi | 55% | 2031 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 40,451 psi | 65% | 2070 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 29,660 psi | 48% | 1946 fps | 96.1% |
| ADI AR 2206H | <<locked>> | 80% | 46,050 psi | 74% | 2162 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 39,102 psi | 63% | 2044 fps | 99% |
| ADI AR 2209 | <<locked>> | 96% | 43,656 psi | 70% | 2188 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 48,095 psi | 77% | 2162 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 48,863 psi | 78% | 2139 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 41,785 psi | 67% | 2201 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 43,453 psi | 70% | 2192 fps | 95.4% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 43,453 psi | 70% | 2192 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,957 psi | 62% | 2067 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,742 psi | 67% | 2116 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 30,240 psi | 48% | 1955 fps | 96.2% |
| Alliant Reloder-17 | 58.8 gr | 80% | 33,475 psi | 54% | 2054 fps | 98.9% |
| Alliant Reloder-19 | <<locked>> | 96% | 42,888 psi | 69% | 2185 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 84% | 24,685 psi | 40% | 1847 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 98% | 33,156 psi | 53% | 2060 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 90% | 31,531 psi | 51% | 2070 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,034 psi | 72% | 2172 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 38,595 psi | 62% | 2070 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 39,421 psi | 63% | 2047 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 49,676 psi | 80% | 2146 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 46,876 psi | 75% | 2185 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 51,851 psi | 83% | 2303 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 39,349 psi | 63% | 2077 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 84% | 36,361 psi | 58% | 2070 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 86% | 42,395 psi | 68% | 2129 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 46,470 psi | 75% | 2169 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 27,818 psi | 45% | 1877 fps | 97% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,496 psi | 68% | 2152 fps | 100% |
| Hodgdon Superformance | 66.8 gr | 86% | 38,145 psi | 61% | 2126 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,672 psi | 43% | 1201 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,512 psi | 71% | 2129 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 46,383 psi | 74% | 2152 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,060 psi | 66% | 2070 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,468 psi | 70% | 2090 fps | 97.1% |
| IMR 4350 | <<locked>> | 88% | 39,566 psi | 63% | 2077 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 36,260 psi | 58% | 1991 fps | 95% |
| IMR 4831 | <<locked>> | 80% | 28,921 psi | 46% | 1913 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 42,743 psi | 69% | 2139 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 48,095 psi | 77% | 2162 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 45,295 psi | 73% | 2142 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,977 psi | 74% | 2106 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 41,191 psi | 66% | 2073 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 33,852 psi | 54% | 1955 fps | 95.9% |
| Lovex S070 | <<locked>> | 84% | 36,172 psi | 58% | 2018 fps | 95.4% |
| Lovex S071 | <<locked>> | 98% | 32,634 psi | 52% | 2001 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 45,194 psi | 72% | 2119 fps | 100% |
| Norma 202 | <<locked>> | 80% | 45,513 psi | 73% | 2123 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,118 psi | 66% | 2106 fps | 99.7% |
| Norma 204 | <<locked>> | 92% | 44,425 psi | 71% | 2188 fps | 95.5% |
| Norma MRP | <<locked>> | 94% | 36,564 psi | 59% | 2142 fps | 95% |
| Norma URP | <<locked>> | 80% | 30,182 psi | 48% | 1946 fps | 96% |
| Ramshot Big Game | <<locked>> | 80% | 40,480 psi | 65% | 2119 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 84% | 33,417 psi | 54% | 2021 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 47,892 psi | 77% | 2178 fps | 99.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 47,442 psi | 76% | 2192 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 80% | 51,764 psi | 83% | 2205 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,122 psi | 43% | 1234 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 39,595 psi | 63% | 2060 fps | 96.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 44,005 psi | 71% | 2201 fps | 99.7% |
| ReloadSwiss RS 60 | 58.8 gr | 80% | 35,636 psi | 57% | 2103 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 29,486 psi | 47% | 1959 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 31,502 psi | 51% | 2005 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 49,211 psi | 79% | 2142 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,018 psi | 69% | 2083 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 36,405 psi | 58% | 2028 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 98% | 48,124 psi | 77% | 2215 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 96% | 41,495 psi | 67% | 2169 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 84% | 39,421 psi | 63% | 2047 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 33,852 psi | 54% | 1955 fps | 95.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,295 psi | 73% | 2142 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,191 psi | 66% | 2073 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 36,172 psi | 58% | 2018 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,173 psi | 60% | 2070 fps | 99.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,340 psi | 74% | 2159 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,425 psi | 71% | 2139 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,340 psi | 74% | 2070 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,667 psi | 62% | 1969 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 37,391 psi | 60% | 1991 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 41,133 psi | 66% | 2165 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 51,808 psi | 83% | 2224 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 46,079 psi | 74% | 2073 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 45,890 psi | 74% | 2152 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 37,217 psi | 60% | 2031 fps | 99.4% |
| Somchem S365 | <<locked>> | 80% | 27,035 psi | 43% | 1913 fps | 98.2% |
| Somchem S385 | <<locked>> | 94% | 39,392 psi | 63% | 2113 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 52,214 psi | 84% | 2106 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 46,731 psi | 75% | 2060 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,525 psi | 68% | 2057 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,091 psi | 69% | 2070 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,331 psi | 57% | 1978 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 31,473 psi | 50% | 1946 fps | 96.4% |
| Vihtavuori N530 | <<locked>> | 80% | 48,240 psi | 77% | 2159 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 41,394 psi | 66% | 2067 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 30,893 psi | 50% | 1949 fps | 96% |
| Vihtavuori N555 | <<locked>> | 84% | 26,223 psi | 42% | 1903 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,067 psi | 50% | 1929 fps | 98.3% |
| Winchester 748 | <<locked>> | 80% | 47,964 psi | 77% | 2198 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 36,550 psi | 59% | 2073 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 88% | 24,511 psi | 39% | 1903 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 43,888 psi | 70% | 2142 fps | 100% |
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 .375 | 350gr | Woodleigh RN SN. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,388 fps; across all powders the maximum-charge window runs from 1,348 fps to 2,388 fps. Accurate 3100 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 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. Hodgdon Superformance, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for .375 H&H Mag. with the .375 | 350gr | Woodleigh RN 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.