Load Specifications
Bullet Manufacturer:Rhino Bullets
Bullet Weight:340 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 | 340gr | Rhino Solid Shank bullet and 102 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and Alliant Power Pro 2000-MR.
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% | 53,969 psi | 87% | 2185 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 55,608 psi | 89% | 2251 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 55,506 psi | 89% | 2244 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 53,925 psi | 86% | 2264 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 54,882 psi | 88% | 2257 fps | 97.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 38,928 psi | 62% | 2136 fps | 96.6% |
| Accurate 4064 | <<locked>> | 92% | 55,521 psi | 89% | 2287 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 54,810 psi | 88% | 2365 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 88% | 56,173 psi | 90% | 2316 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 53,751 psi | 86% | 2277 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 86% | 55,172 psi | 88% | 2274 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 56,043 psi | 90% | 2244 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 55,695 psi | 89% | 2421 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 53,519 psi | 86% | 2293 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 54,288 psi | 87% | 2313 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 52,779 psi | 85% | 2369 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 96% | 53,650 psi | 86% | 2398 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,608 psi | 60% | 2162 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 41,568 psi | 67% | 2293 fps | 98.6% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 55,941 psi | 90% | 2336 fps | 100% |
| Bofors RP3 | <<locked>> | 92% | 53,940 psi | 86% | 2306 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 54,128 psi | 87% | 2283 fps | 98.1% |
| Hodgdon Benchmark | <<locked>> | 84% | 53,809 psi | 86% | 2218 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 54,462 psi | 87% | 2303 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 56,362 psi | 90% | 2385 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 55,869 psi | 90% | 2260 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 55,056 psi | 88% | 2323 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 98% | 54,259 psi | 87% | 2365 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 96% | 55,259 psi | 89% | 2333 fps | 97.7% |
| Hodgdon H4895 | <<locked>> | 86% | 53,272 psi | 85% | 2283 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,124 psi | 79% | 2267 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 55,883 psi | 90% | 2356 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 54,897 psi | 88% | 2402 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,578 psi | 57% | 1355 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 54,520 psi | 87% | 2287 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 53,374 psi | 86% | 2264 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 53,432 psi | 86% | 2264 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 53,403 psi | 86% | 2247 fps | 98.4% |
| IMR 4350ᴾ | <<locked>> | 100% | 54,186 psi | 87% | 2310 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 96% | 56,217 psi | 90% | 2313 fps | 98.7% |
| IMR 4831ᴾ | <<locked>> | 100% | 51,706 psi | 83% | 2313 fps | 99.8% |
| IMR 4895 | <<locked>> | 90% | 55,651 psi | 89% | 2336 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 55,172 psi | 88% | 2274 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 55,477 psi | 89% | 2260 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 55,796 psi | 89% | 2293 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 55,941 psi | 90% | 2254 fps | 100% |
| Lovex S062 | <<locked>> | 92% | 56,304 psi | 90% | 2297 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 55,376 psi | 89% | 2306 fps | 99.5% |
| Lovex S070ᴾ | <<locked>> | 100% | 55,956 psi | 90% | 2333 fps | 98.9% |
| Norma 201 | <<locked>> | 88% | 54,998 psi | 88% | 2270 fps | 100% |
| Norma 202 | <<locked>> | 88% | 55,390 psi | 89% | 2267 fps | 100% |
| Norma 203B | <<locked>> | 90% | 53,447 psi | 86% | 2303 fps | 100% |
| Norma 204ᴾ | <<locked>> | 100% | 54,737 psi | 88% | 2352 fps | 97.1% |
| Norma MRPᴾ | <<locked>> | 100% | 41,727 psi | 67% | 2254 fps | 96% |
| Norma URPᴾ | <<locked>> | 100% | 53,722 psi | 86% | 2352 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 90% | 53,708 psi | 86% | 2326 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 52,591 psi | 84% | 2356 fps | 99.1% |
| Ramshot TAC | <<locked>> | 86% | 55,390 psi | 89% | 2297 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 86% | 54,868 psi | 88% | 2310 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 84% | 56,072 psi | 90% | 2277 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,940 psi | 58% | 1388 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 54,766 psi | 88% | 2254 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 55,230 psi | 89% | 2306 fps | 99.1% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 54,375 psi | 87% | 2365 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 53,592 psi | 86% | 2395 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 54,085 psi | 87% | 2385 fps | 99.9% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 54,114 psi | 87% | 2411 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 86% | 56,101 psi | 90% | 2247 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 55,521 psi | 89% | 2267 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 53,780 psi | 86% | 2300 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 54,128 psi | 87% | 2283 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 98% | 55,376 psi | 89% | 2306 fps | 99.5% |
| Shooters World Match Rifle | <<locked>> | 88% | 55,796 psi | 89% | 2293 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 56,304 psi | 90% | 2297 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 55,956 psi | 90% | 2333 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 55,477 psi | 89% | 2352 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 53,838 psi | 86% | 2280 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 54,360 psi | 87% | 2293 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 53,229 psi | 85% | 2175 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 53,229 psi | 85% | 2178 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 55,883 psi | 90% | 2270 fps | 98.7% |
| Somchem S321 | <<locked>> | 84% | 56,376 psi | 90% | 2303 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 55,869 psi | 90% | 2215 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 53,388 psi | 86% | 2270 fps | 100% |
| Somchem S355 | <<locked>> | 94% | 54,244 psi | 87% | 2300 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 48,182 psi | 77% | 2313 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 44,933 psi | 72% | 2221 fps | 96.4% |
| Vihtavuori N130 | <<locked>> | 82% | 53,316 psi | 85% | 2142 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 53,461 psi | 86% | 2162 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 55,027 psi | 88% | 2231 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 55,883 psi | 90% | 2251 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 55,492 psi | 89% | 2277 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 52,997 psi | 85% | 2306 fps | 99.8% |
| Vihtavuori N530 | <<locked>> | 86% | 55,840 psi | 90% | 2274 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 53,925 psi | 86% | 2251 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 55,434 psi | 89% | 2359 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,756 psi | 65% | 2221 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 53,229 psi | 85% | 2293 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 55,622 psi | 89% | 2316 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 54,259 psi | 87% | 2365 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,533 psi | 54% | 2169 fps | 99.3% |
| Winchester StaBALL Match | <<locked>> | 88% | 54,360 psi | 87% | 2303 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% | 47,805 psi | 77% | 2113 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 52,141 psi | 84% | 2211 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,437 psi | 65% | 2060 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,108 psi | 76% | 2182 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 42,424 psi | 68% | 2083 fps | 95.4% |
| Accurate 3100 | <<locked>> | 96% | 33,866 psi | 54% | 2047 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 38,261 psi | 61% | 2060 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 29,675 psi | 48% | 1965 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 43,772 psi | 70% | 2149 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 80% | 37,304 psi | 60% | 2031 fps | 98.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,847 psi | 74% | 2152 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 46,253 psi | 74% | 2136 fps | 100% |
| Alliant Power Pro 2000-MR | 58.1 gr | 80% | 39,711 psi | 64% | 2185 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,825 psi | 59% | 2051 fps | 99.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,537 psi | 63% | 2103 fps | 98.9% |
| Alliant Reloder-16 | <<locked>> | 82% | 30,545 psi | 49% | 1978 fps | 95.6% |
| Alliant Reloder-17 | 57.2 gr | 80% | 31,734 psi | 51% | 2034 fps | 97.9% |
| Alliant Reloder-23 | <<locked>> | 88% | 26,339 psi | 42% | 1906 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 92% | 31,705 psi | 51% | 2087 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,902 psi | 69% | 2159 fps | 99% |
| Bofors RP3 | <<locked>> | 80% | 36,376 psi | 58% | 2057 fps | 99.3% |
| Bofors RP7 | <<locked>> | 88% | 42,482 psi | 68% | 2116 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,703 psi | 76% | 2142 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,541 psi | 71% | 2175 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 49,226 psi | 79% | 2293 fps | 99.9% |
| Hodgdon H322 | <<locked>> | 80% | 52,576 psi | 84% | 2221 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 37,260 psi | 60% | 2057 fps | 97.3% |
| Hodgdon H414 | <<locked>> | 88% | 39,218 psi | 63% | 2142 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 88% | 42,844 psi | 69% | 2156 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 44,193 psi | 71% | 2159 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 26,353 psi | 42% | 1857 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,176 psi | 64% | 2142 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 90% | 41,379 psi | 66% | 2198 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,498 psi | 42% | 1207 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,554 psi | 68% | 2123 fps | 99.7% |
| IMR 3031 | <<locked>> | 80% | 43,932 psi | 70% | 2149 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,160 psi | 63% | 2057 fps | 98.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 41,742 psi | 67% | 2077 fps | 96.1% |
| IMR 4350 | <<locked>> | 90% | 39,842 psi | 64% | 2096 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 84% | 39,175 psi | 63% | 2060 fps | 95.3% |
| IMR 4831 | <<locked>> | 82% | 28,993 psi | 46% | 1936 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 40,509 psi | 65% | 2126 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 80% | 45,847 psi | 74% | 2152 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 51,822 psi | 83% | 2218 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 42,902 psi | 69% | 2133 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 44,092 psi | 71% | 2100 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 39,189 psi | 63% | 2064 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 34,171 psi | 55% | 1978 fps | 95.4% |
| Lovex S070 | <<locked>> | 88% | 38,754 psi | 62% | 2083 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 43,134 psi | 69% | 2113 fps | 100% |
| Norma 202 | <<locked>> | 80% | 43,163 psi | 69% | 2113 fps | 100% |
| Norma 203B | <<locked>> | 80% | 38,928 psi | 62% | 2093 fps | 99.1% |
| Norma 204 | <<locked>> | 96% | 47,993 psi | 77% | 2257 fps | 95.7% |
| Norma MRP | <<locked>> | 98% | 39,160 psi | 63% | 2208 fps | 95.1% |
| Norma URP | <<locked>> | 82% | 30,371 psi | 49% | 1972 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 38,363 psi | 62% | 2106 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 88% | 35,839 psi | 57% | 2087 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 45,687 psi | 73% | 2165 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,223 psi | 73% | 2182 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,371 psi | 79% | 2195 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,745 psi | 43% | 1237 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 51,372 psi | 82% | 2215 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 37,681 psi | 60% | 2044 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,452 psi | 66% | 2185 fps | 99.2% |
| ReloadSwiss RS 60 | 57.2 gr | 80% | 33,765 psi | 54% | 2087 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 31,575 psi | 51% | 2024 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 34,156 psi | 55% | 2077 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 47,007 psi | 75% | 2136 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,046 psi | 66% | 2073 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 34,243 psi | 55% | 2011 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 88% | 42,482 psi | 68% | 2116 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 82% | 34,171 psi | 55% | 1978 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,902 psi | 69% | 2133 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 39,189 psi | 63% | 2064 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 88% | 38,754 psi | 62% | 2083 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,157 psi | 56% | 2054 fps | 98.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,932 psi | 70% | 2146 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,279 psi | 68% | 2129 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,483 psi | 71% | 2067 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,985 psi | 59% | 1965 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 37,884 psi | 61% | 2018 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 49,501 psi | 79% | 2221 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 44,106 psi | 71% | 2070 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,700 psi | 70% | 2142 fps | 99.6% |
| Somchem S355 | <<locked>> | 80% | 35,331 psi | 57% | 2018 fps | 98.8% |
| Somchem S365 | <<locked>> | 80% | 25,498 psi | 41% | 1886 fps | 96.9% |
| Somchem S385 | <<locked>> | 98% | 42,076 psi | 67% | 2175 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 50,241 psi | 81% | 2110 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,831 psi | 72% | 2060 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,495 psi | 65% | 2054 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,872 psi | 66% | 2064 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,373 psi | 54% | 1965 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 80% | 29,718 psi | 48% | 1926 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 45,919 psi | 74% | 2149 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 39,334 psi | 63% | 2057 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 31,053 psi | 50% | 1972 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 88% | 27,920 psi | 45% | 1965 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,646 psi | 48% | 1913 fps | 97.2% |
| Winchester 748 | <<locked>> | 80% | 45,542 psi | 73% | 2192 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 39,218 psi | 63% | 2142 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 92% | 26,223 psi | 42% | 1965 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,669 psi | 67% | 2133 fps | 99.7% |
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 102 powders for .375 H&H Mag. loaded with the .374 | 340gr | Rhino Solid Shank. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,421 fps; across all powders the maximum-charge window runs from 1,355 fps to 2,421 fps. Accurate 3100 gives the best case fill at 100 %, and 102 of the 102 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 340.0 gr projectile in 0.374" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, Alliant Reloder-16 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 Reloder-17, ReloadSwiss RS 60, Alliant Power Pro 2000-MR rank at the top here: for .375 H&H Mag. with the .374 | 340gr | Rhino Solid Shank 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.