Load Specifications
Load data in caliber .375 Hoelderlin with .375 | 300gr | Woodleigh RN SN bullet and 90 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 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.
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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 84% | 49,472 psi | 90% | 2316 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 47,021 psi | 85% | 2336 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 48,892 psi | 89% | 2392 fps | 100% |
| Accurate 4064 | <<locked>> | 90% | 47,181 psi | 86% | 2375 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 48,660 psi | 88% | 2474 fps | 99.1% |
| ADI AR 2206H | <<locked>> | 86% | 48,399 psi | 88% | 2398 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 92% | 49,298 psi | 89% | 2398 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 84% | 47,921 psi | 87% | 2362 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 47,659 psi | 86% | 2343 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 47,326 psi | 86% | 2490 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 48,646 psi | 88% | 2418 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 90% | 49,400 psi | 90% | 2434 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,022 psi | 87% | 2480 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 96% | 48,588 psi | 88% | 2516 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 33,953 psi | 62% | 2251 fps | 97.4% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 47,776 psi | 87% | 2411 fps | 99% |
| Bofors RP3 | <<locked>> | 92% | 48,776 psi | 89% | 2428 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 49,647 psi | 90% | 2395 fps | 96.2% |
| Hodgdon Benchmark | <<locked>> | 82% | 46,920 psi | 85% | 2306 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 49,429 psi | 90% | 2428 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 47,645 psi | 86% | 2461 fps | 99.4% |
| Hodgdon H380 | <<locked>> | 90% | 47,007 psi | 85% | 2392 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 98% | 48,805 psi | 89% | 2474 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 86% | 48,791 psi | 89% | 2408 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,251 psi | 80% | 2375 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 47,268 psi | 86% | 2434 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 98% | 49,661 psi | 90% | 2500 fps | 96.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,041 psi | 64% | 1457 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 46,963 psi | 85% | 2365 fps | 99.7% |
| IMR 3031 | <<locked>> | 86% | 48,196 psi | 87% | 2395 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 48,950 psi | 89% | 2382 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 88% | 49,313 psi | 89% | 2362 fps | 96.7% |
| IMR 4350ᴾ | <<locked>> | 100% | 49,255 psi | 89% | 2415 fps | 96.2% |
| IMR 4451 Enduron | <<locked>> | 94% | 48,660 psi | 88% | 2382 fps | 96.5% |
| IMR 4831ᴾ | <<locked>> | 100% | 46,441 psi | 84% | 2425 fps | 98.9% |
| IMR 4895 | <<locked>> | 88% | 47,485 psi | 86% | 2415 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 84% | 47,921 psi | 87% | 2362 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 47,224 psi | 86% | 2379 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 48,747 psi | 88% | 2339 fps | 99.7% |
| Lovex S062 | <<locked>> | 90% | 48,472 psi | 88% | 2382 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 47,572 psi | 86% | 2379 fps | 97.8% |
| Lovex S070 | <<locked>> | 98% | 47,950 psi | 87% | 2402 fps | 96.8% |
| Norma 201 | <<locked>> | 86% | 47,355 psi | 86% | 2352 fps | 100% |
| Norma 202 | <<locked>> | 86% | 47,776 psi | 87% | 2359 fps | 100% |
| Norma 203B | <<locked>> | 90% | 48,588 psi | 88% | 2425 fps | 99.7% |
| Norma URPᴾ | <<locked>> | 100% | 48,501 psi | 88% | 2470 fps | 99% |
| Ramshot Big Game | <<locked>> | 90% | 48,573 psi | 88% | 2444 fps | 99.6% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 47,630 psi | 86% | 2464 fps | 97.5% |
| Ramshot TAC | <<locked>> | 84% | 47,834 psi | 87% | 2369 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 84% | 46,992 psi | 85% | 2385 fps | 99.5% |
| Ramshot X-Terminator | <<locked>> | 82% | 48,631 psi | 88% | 2359 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,302 psi | 64% | 1493 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 47,500 psi | 86% | 2375 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 48,965 psi | 89% | 2487 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 48,457 psi | 88% | 2516 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 48,196 psi | 87% | 2493 fps | 98.9% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 49,066 psi | 89% | 2516 fps | 98.6% |
| Rottweil R 901 | <<locked>> | 84% | 48,863 psi | 89% | 2343 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 47,790 psi | 87% | 2352 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 48,660 psi | 88% | 2421 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 96% | 49,647 psi | 90% | 2395 fps | 96.2% |
| Shooters World Long Rifle | <<locked>> | 96% | 47,572 psi | 86% | 2379 fps | 97.8% |
| Shooters World Match Rifle | <<locked>> | 86% | 47,224 psi | 86% | 2379 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 48,472 psi | 88% | 2382 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 47,950 psi | 87% | 2402 fps | 96.8% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 47,108 psi | 85% | 2431 fps | 99.6% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 49,168 psi | 89% | 2395 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 46,891 psi | 85% | 2375 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 49,313 psi | 89% | 2306 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 48,849 psi | 89% | 2306 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 47,514 psi | 86% | 2333 fps | 96.4% |
| Somchem S321 | <<locked>> | 82% | 48,414 psi | 88% | 2388 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 48,472 psi | 88% | 2306 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 48,718 psi | 88% | 2392 fps | 99.6% |
| Somchem S355 | <<locked>> | 94% | 49,429 psi | 90% | 2421 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,062 psi | 78% | 2425 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 49,327 psi | 90% | 2277 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 49,443 psi | 90% | 2297 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 47,050 psi | 85% | 2326 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 48,138 psi | 87% | 2343 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 47,500 psi | 86% | 2362 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 47,718 psi | 87% | 2418 fps | 98.8% |
| Vihtavuori N530 | <<locked>> | 84% | 48,008 psi | 87% | 2356 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 49,443 psi | 90% | 2382 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 46,847 psi | 85% | 2425 fps | 98.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 36,201 psi | 66% | 2316 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 48,544 psi | 88% | 2408 fps | 99.9% |
| Winchester 748 | <<locked>> | 84% | 47,239 psi | 86% | 2398 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 49,023 psi | 89% | 2477 fps | 97% |
| Winchester StaBALL Match | <<locked>> | 88% | 49,356 psi | 90% | 2425 fps | 99.9% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 43,816 psi | 80% | 2241 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 36,347 psi | 66% | 2175 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 42,743 psi | 78% | 2303 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 34,345 psi | 62% | 2169 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 32,184 psi | 58% | 2188 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 40,219 psi | 73% | 2264 fps | 98.6% |
| ADI AR 2208 | <<locked>> | 80% | 34,316 psi | 62% | 2136 fps | 96.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,264 psi | 77% | 2274 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 80% | 41,698 psi | 76% | 2264 fps | 100% |
| Alliant Power Pro 2000-MR | 58.9 gr | 80% | 36,201 psi | 66% | 2280 fps | 96.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,489 psi | 61% | 2156 fps | 97.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,100 psi | 66% | 2208 fps | 97.3% |
| Alliant Reloder-16 | <<locked>> | 88% | 33,417 psi | 61% | 2201 fps | 95.5% |
| Alliant Reloder-17 | 58 gr | 80% | 28,892 psi | 52% | 2119 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 96% | 30,168 psi | 55% | 2159 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,030 psi | 71% | 2264 fps | 97.4% |
| Bofors RP3 | <<locked>> | 80% | 32,808 psi | 60% | 2156 fps | 97.9% |
| Bofors RP7 | <<locked>> | 94% | 46,789 psi | 85% | 2352 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,338 psi | 80% | 2267 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,437 psi | 73% | 2290 fps | 99.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,425 psi | 81% | 2408 fps | 99% |
| Hodgdon H380 | <<locked>> | 80% | 33,852 psi | 61% | 2156 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 94% | 42,975 psi | 78% | 2379 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 40,524 psi | 74% | 2274 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 28,703 psi | 52% | 2067 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,405 psi | 66% | 2251 fps | 98.7% |
| Hodgdon Superformance | <<locked>> | 96% | 46,354 psi | 84% | 2448 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,991 psi | 47% | 1299 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,972 psi | 71% | 2234 fps | 98.8% |
| IMR 3031 | <<locked>> | 80% | 39,639 psi | 72% | 2270 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,984 psi | 65% | 2165 fps | 97.2% |
| IMR 4166 Enduron | <<locked>> | 84% | 43,569 psi | 79% | 2270 fps | 95.4% |
| IMR 4350 | <<locked>> | 98% | 46,485 psi | 84% | 2372 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 90% | 43,178 psi | 78% | 2293 fps | 95.2% |
| IMR 4831 | <<locked>> | 88% | 31,517 psi | 57% | 2152 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 36,912 psi | 67% | 2234 fps | 98.1% |
| IMR 8208 XBR | <<locked>> | 80% | 42,264 psi | 77% | 2274 fps | 99.6% |
| Lovex D073.6 | <<locked>> | 80% | 38,783 psi | 70% | 2247 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 40,785 psi | 74% | 2211 fps | 98.7% |
| Lovex S062 | <<locked>> | 80% | 35,694 psi | 65% | 2169 fps | 98.8% |
| Lovex S065 | <<locked>> | 88% | 37,376 psi | 68% | 2205 fps | 95.2% |
| Lovex S070 | <<locked>> | 94% | 42,467 psi | 77% | 2316 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 39,465 psi | 72% | 2224 fps | 99.3% |
| Norma 202 | <<locked>> | 80% | 39,581 psi | 72% | 2234 fps | 100% |
| Norma 203B | <<locked>> | 80% | 35,462 psi | 64% | 2198 fps | 97.7% |
| Norma URP | <<locked>> | 88% | 33,214 psi | 60% | 2195 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 34,795 psi | 63% | 2208 fps | 97.2% |
| Ramshot Hunter | <<locked>> | 94% | 39,378 psi | 71% | 2320 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 41,989 psi | 76% | 2274 fps | 96.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,278 psi | 75% | 2293 fps | 98.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,527 psi | 83% | 2313 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,324 psi | 48% | 1332 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 41,727 psi | 76% | 2280 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 37,260 psi | 68% | 2290 fps | 97.6% |
| ReloadSwiss RS 60 | 58 gr | 80% | 30,748 psi | 56% | 2178 fps | 98.7% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 34,563 psi | 63% | 2254 fps | 95.6% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 37,637 psi | 68% | 2306 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 43,250 psi | 78% | 2260 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 37,550 psi | 68% | 2185 fps | 99% |
| Rottweil R 903 | <<locked>> | 80% | 30,893 psi | 56% | 2106 fps | 97% |
| Rottweil R 907 | <<locked>> | 94% | 46,789 psi | 85% | 2352 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 88% | 37,376 psi | 68% | 2205 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,783 psi | 70% | 2247 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 35,694 psi | 65% | 2169 fps | 98.8% |
| Shooters World SW4350 | <<locked>> | 94% | 42,467 psi | 77% | 2316 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 31,966 psi | 58% | 2149 fps | 96.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,030 psi | 73% | 2247 fps | 96.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,725 psi | 70% | 2238 fps | 98.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,089 psi | 75% | 2188 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,866 psi | 61% | 2077 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 41,568 psi | 75% | 2241 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 45,281 psi | 82% | 2343 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 40,582 psi | 74% | 2192 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 39,769 psi | 72% | 2251 fps | 98.5% |
| Somchem S355 | <<locked>> | 80% | 31,981 psi | 58% | 2116 fps | 97.1% |
| Somchem S365 | <<locked>> | 84% | 26,092 psi | 47% | 2054 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 46,485 psi | 84% | 2241 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,249 psi | 75% | 2182 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,666 psi | 67% | 2172 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,405 psi | 68% | 2178 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 30,298 psi | 55% | 2064 fps | 97.9% |
| Vihtavuori N160 | <<locked>> | 88% | 34,722 psi | 63% | 2195 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 42,192 psi | 77% | 2267 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 35,940 psi | 65% | 2172 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 88% | 33,910 psi | 62% | 2195 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 94% | 29,965 psi | 54% | 2178 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 28,950 psi | 53% | 2041 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 41,336 psi | 75% | 2306 fps | 99.9% |
| Winchester 760 | <<locked>> | 94% | 42,975 psi | 78% | 2379 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,869 psi | 69% | 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 90 powders for .375 Hoelderlin loaded with the .375 | 300gr | Woodleigh RN SN. Alliant Reloder-17 delivers the highest muzzle velocity at 2,516 fps; across all powders the maximum-charge window runs from 1,457 fps to 2,516 fps. Accurate 4350 gives the best case fill at 100 %, and 90 of the 90 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 62–90 %, leaving at least 10 % headroom. The 300.0 gr projectile in 0.375" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 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, Alliant Reloder-17 rank at the top here: for .375 Hoelderlin with the .375 | 300gr | 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.