Load Specifications
Load data in caliber .375 Hoelderlin with .375 | 301gr | RWS UNI Classic 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 Reloder-17 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.
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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% | 48,037 psi | 87% | 2280 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 49,124 psi | 89% | 2339 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 48,196 psi | 87% | 2336 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 47,224 psi | 86% | 2352 fps | 100% |
| Accurate 4064 | <<locked>> | 92% | 48,153 psi | 87% | 2375 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 46,586 psi | 85% | 2428 fps | 98.7% |
| ADI AR 2206H | <<locked>> | 86% | 46,818 psi | 85% | 2356 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 92% | 47,732 psi | 87% | 2356 fps | 99.1% |
| ADI Benchmark 8208 | <<locked>> | 86% | 49,226 psi | 89% | 2362 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 48,965 psi | 89% | 2343 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 48,762 psi | 88% | 2493 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 46,876 psi | 85% | 2372 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 90% | 47,688 psi | 87% | 2392 fps | 99.3% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 46,311 psi | 84% | 2431 fps | 98.8% |
| Alliant Reloder-17 | <<locked>> | 96% | 46,746 psi | 85% | 2467 fps | 99.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 32,692 psi | 59% | 2201 fps | 96.7% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 49,066 psi | 89% | 2411 fps | 99.1% |
| Bofors RP3 | <<locked>> | 92% | 46,833 psi | 85% | 2385 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 84% | 48,559 psi | 88% | 2310 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 47,761 psi | 87% | 2388 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 49,197 psi | 89% | 2464 fps | 99.5% |
| Hodgdon H322 | <<locked>> | 82% | 49,734 psi | 90% | 2356 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 48,312 psi | 88% | 2395 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 98% | 46,905 psi | 85% | 2425 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 86% | 47,181 psi | 86% | 2365 fps | 99.7% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 42,525 psi | 77% | 2329 fps | 99.2% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 48,718 psi | 88% | 2438 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,780 psi | 63% | 1437 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 48,559 psi | 88% | 2369 fps | 99.8% |
| IMR 3031 | <<locked>> | 88% | 49,603 psi | 90% | 2398 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 47,413 psi | 86% | 2343 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 88% | 47,993 psi | 87% | 2320 fps | 96.2% |
| IMR 4451 Enduron | <<locked>> | 94% | 47,079 psi | 85% | 2339 fps | 95.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 44,396 psi | 81% | 2379 fps | 98.4% |
| IMR 4895 | <<locked>> | 90% | 48,849 psi | 89% | 2418 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 86% | 49,226 psi | 89% | 2362 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 49,052 psi | 89% | 2349 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 48,791 psi | 89% | 2382 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 47,413 psi | 86% | 2300 fps | 99.4% |
| Lovex S062 | <<locked>> | 90% | 46,920 psi | 85% | 2343 fps | 99.9% |
| Lovex S065 | <<locked>> | 98% | 48,776 psi | 89% | 2375 fps | 97.8% |
| Lovex S070ᴾ | <<locked>> | 100% | 49,095 psi | 89% | 2398 fps | 96.8% |
| Norma 201 | <<locked>> | 88% | 48,834 psi | 89% | 2356 fps | 100% |
| Norma 202 | <<locked>> | 88% | 49,023 psi | 89% | 2359 fps | 100% |
| Norma 203B | <<locked>> | 92% | 49,850 psi | 90% | 2425 fps | 99.7% |
| Norma URPᴾ | <<locked>> | 100% | 46,369 psi | 84% | 2418 fps | 98.6% |
| Ramshot Big Game | <<locked>> | 92% | 49,835 psi | 90% | 2444 fps | 99.6% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 45,774 psi | 83% | 2411 fps | 96.8% |
| Ramshot TAC | <<locked>> | 86% | 49,385 psi | 90% | 2372 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 86% | 48,631 psi | 88% | 2392 fps | 99.6% |
| Ramshot X-Terminator | <<locked>> | 82% | 47,210 psi | 86% | 2320 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,273 psi | 64% | 1473 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 49,023 psi | 89% | 2349 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 48,950 psi | 89% | 2375 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 47,036 psi | 85% | 2441 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 46,731 psi | 85% | 2474 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 46,050 psi | 84% | 2444 fps | 98.4% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 47,340 psi | 86% | 2464 fps | 98% |
| Rottweil R 901 | <<locked>> | 84% | 47,239 psi | 86% | 2303 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 49,327 psi | 90% | 2356 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 49,748 psi | 90% | 2418 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 98% | 48,776 psi | 89% | 2375 fps | 97.8% |
| Shooters World Match Rifle | <<locked>> | 88% | 48,791 psi | 89% | 2382 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 46,920 psi | 85% | 2343 fps | 99.9% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 49,095 psi | 89% | 2398 fps | 96.8% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 48,254 psi | 88% | 2428 fps | 99.6% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 47,398 psi | 86% | 2349 fps | 98.2% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 48,327 psi | 88% | 2379 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 47,790 psi | 87% | 2267 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 47,355 psi | 86% | 2270 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 48,965 psi | 89% | 2333 fps | 96.4% |
| Somchem S321 | <<locked>> | 82% | 46,717 psi | 85% | 2346 fps | 99.9% |
| Somchem S335 | <<locked>> | 86% | 47,094 psi | 85% | 2270 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 46,978 psi | 85% | 2346 fps | 99.4% |
| Somchem S355 | <<locked>> | 94% | 47,558 psi | 86% | 2375 fps | 99.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,379 psi | 75% | 2379 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 82% | 47,935 psi | 87% | 2241 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 47,877 psi | 87% | 2260 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 48,443 psi | 88% | 2329 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 49,574 psi | 90% | 2343 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 48,718 psi | 88% | 2362 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 49,066 psi | 89% | 2421 fps | 98.8% |
| Vihtavuori N530 | <<locked>> | 86% | 49,647 psi | 90% | 2362 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 47,659 psi | 86% | 2343 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 47,950 psi | 87% | 2425 fps | 98.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 34,635 psi | 63% | 2267 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 46,818 psi | 85% | 2362 fps | 99.7% |
| Winchester 748 | <<locked>> | 86% | 48,617 psi | 88% | 2402 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 47,123 psi | 86% | 2428 fps | 96.3% |
| Winchester StaBALL Match | <<locked>> | 88% | 47,761 psi | 87% | 2385 fps | 99.8% |
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% | 42,366 psi | 77% | 2205 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 45,977 psi | 83% | 2297 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 34,925 psi | 63% | 2139 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 41,089 psi | 75% | 2260 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 33,054 psi | 60% | 2129 fps | 99.8% |
| Accurate 4350 | <<locked>> | 90% | 32,924 psi | 60% | 2188 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 38,986 psi | 71% | 2224 fps | 98.2% |
| ADI AR 2208 | <<locked>> | 80% | 33,243 psi | 60% | 2096 fps | 95.9% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,017 psi | 74% | 2234 fps | 99.4% |
| Alliant AR-Comp | <<locked>> | 80% | 40,103 psi | 73% | 2224 fps | 100% |
| Alliant Power Pro 2000-MR | 56.7 gr | 80% | 34,940 psi | 63% | 2234 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,285 psi | 59% | 2116 fps | 97.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 34,911 psi | 63% | 2169 fps | 96.7% |
| Alliant Reloder-16 | <<locked>> | 90% | 34,301 psi | 62% | 2201 fps | 95.5% |
| Alliant Reloder-17 | 57.3 gr | 82% | 29,820 psi | 54% | 2126 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 98% | 30,835 psi | 56% | 2156 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 37,681 psi | 68% | 2221 fps | 96.9% |
| Bofors RP3 | <<locked>> | 80% | 31,488 psi | 57% | 2113 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 42,917 psi | 78% | 2224 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 38,972 psi | 71% | 2251 fps | 99.5% |
| Hodgdon CFE223 | <<locked>> | 80% | 42,859 psi | 78% | 2365 fps | 98.6% |
| Hodgdon H322 | <<locked>> | 80% | 46,659 psi | 85% | 2316 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 34,925 psi | 63% | 2162 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 96% | 44,106 psi | 80% | 2379 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 39,305 psi | 71% | 2238 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 29,515 psi | 54% | 2070 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,027 psi | 64% | 2205 fps | 98.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,831 psi | 47% | 1280 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,768 psi | 69% | 2195 fps | 98.4% |
| IMR 3031 | <<locked>> | 80% | 38,290 psi | 69% | 2234 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 34,780 psi | 63% | 2123 fps | 96.7% |
| IMR 4166 Enduron | <<locked>> | 86% | 45,034 psi | 82% | 2274 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 92% | 44,353 psi | 80% | 2293 fps | 95.2% |
| IMR 4831 | <<locked>> | 90% | 32,271 psi | 59% | 2156 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 35,723 psi | 65% | 2195 fps | 97.6% |
| IMR 8208 XBR | <<locked>> | 80% | 41,017 psi | 74% | 2234 fps | 99.4% |
| Lovex D073.5 | <<locked>> | 80% | 45,701 psi | 83% | 2303 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 37,347 psi | 68% | 2208 fps | 99.8% |
| Lovex S060 | <<locked>> | 80% | 39,624 psi | 72% | 2172 fps | 98.3% |
| Lovex S062 | <<locked>> | 80% | 34,505 psi | 63% | 2129 fps | 98.4% |
| Lovex S065 | <<locked>> | 90% | 38,348 psi | 70% | 2205 fps | 95.3% |
| Lovex S070 | <<locked>> | 96% | 43,424 psi | 79% | 2313 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 38,189 psi | 69% | 2185 fps | 99% |
| Norma 202 | <<locked>> | 80% | 38,232 psi | 69% | 2195 fps | 100% |
| Norma 203B | <<locked>> | 80% | 34,301 psi | 62% | 2159 fps | 97.1% |
| Norma URP | <<locked>> | 90% | 34,055 psi | 62% | 2195 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 33,533 psi | 61% | 2162 fps | 96.6% |
| Ramshot Hunter | <<locked>> | 96% | 40,422 psi | 73% | 2320 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 40,698 psi | 74% | 2231 fps | 96.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,827 psi | 72% | 2251 fps | 98.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 44,164 psi | 80% | 2274 fps | 98.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,165 psi | 47% | 1316 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 45,890 psi | 83% | 2303 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 40,335 psi | 73% | 2238 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 35,882 psi | 65% | 2247 fps | 97% |
| ReloadSwiss RS 60 | 55.9 gr | 80% | 29,791 psi | 54% | 2136 fps | 98.2% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 35,476 psi | 64% | 2254 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 38,914 psi | 71% | 2313 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 42,047 psi | 76% | 2224 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 36,318 psi | 66% | 2142 fps | 98.7% |
| Rottweil R 903 | <<locked>> | 80% | 29,747 psi | 54% | 2067 fps | 96.4% |
| Shooters World Long Rifle | <<locked>> | 90% | 38,348 psi | 70% | 2205 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,347 psi | 68% | 2208 fps | 99.8% |
| Shooters World Precision | <<locked>> | 80% | 34,505 psi | 63% | 2129 fps | 98.4% |
| Shooters World SW4350 | <<locked>> | 96% | 43,424 psi | 79% | 2313 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 30,893 psi | 56% | 2110 fps | 95.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 38,682 psi | 70% | 2208 fps | 96.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,405 psi | 68% | 2198 fps | 97.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,929 psi | 72% | 2152 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,837 psi | 60% | 2041 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 42,714 psi | 78% | 2244 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 43,772 psi | 79% | 2300 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 39,349 psi | 71% | 2156 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 38,406 psi | 70% | 2208 fps | 98% |
| Somchem S355 | <<locked>> | 80% | 30,835 psi | 56% | 2077 fps | 96.5% |
| Somchem S365 | <<locked>> | 84% | 25,208 psi | 46% | 2011 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 45,237 psi | 82% | 2205 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,074 psi | 73% | 2149 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 35,375 psi | 64% | 2136 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 36,172 psi | 66% | 2142 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 29,240 psi | 53% | 2024 fps | 97.3% |
| Vihtavuori N160 | <<locked>> | 88% | 33,547 psi | 61% | 2152 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 40,756 psi | 74% | 2228 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 80% | 34,679 psi | 63% | 2133 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 90% | 34,795 psi | 63% | 2198 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 96% | 30,618 psi | 56% | 2178 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 29,878 psi | 54% | 2047 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 39,682 psi | 72% | 2264 fps | 99.7% |
| Winchester 760 | <<locked>> | 96% | 44,106 psi | 80% | 2379 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 36,448 psi | 66% | 2198 fps | 98.2% |
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 | 301gr | RWS UNI Classic. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,493 fps; across all powders the maximum-charge window runs from 1,437 fps to 2,493 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 59–90 %, leaving at least 10 % headroom. The 301.0 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 Reloder-17, Alliant Power Pro 2000-MR rank at the top here: for .375 Hoelderlin with the .375 | 301gr | RWS UNI Classic 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.