Load Specifications
Load data in caliber .375 Hoelderlin with .375 | 300gr | Barnes Solid 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 ReloadSwiss RS 52.
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>> | 86% | 49,226 psi | 89% | 2287 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 47,442 psi | 86% | 2306 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 49,298 psi | 89% | 2339 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 48,399 psi | 88% | 2356 fps | 100% |
| Accurate 4064 | <<locked>> | 94% | 49,211 psi | 89% | 2379 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 44,150 psi | 80% | 2379 fps | 98.1% |
| ADI AR 2206H | <<locked>> | 88% | 48,167 psi | 87% | 2362 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 94% | 49,052 psi | 89% | 2359 fps | 99.1% |
| ADI Benchmark 8208 | <<locked>> | 86% | 47,587 psi | 86% | 2326 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 86% | 46,905 psi | 85% | 2310 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 48,863 psi | 89% | 2411 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 47,036 psi | 85% | 2448 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 48,138 psi | 87% | 2379 fps | 99.8% |
| Alliant Reloder-10x | <<locked>> | 82% | 49,429 psi | 90% | 2293 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 48,965 psi | 89% | 2395 fps | 99.2% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 44,788 psi | 81% | 2388 fps | 98.2% |
| Alliant Reloder-17 | <<locked>> | 98% | 47,950 psi | 87% | 2470 fps | 99.7% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 47,268 psi | 86% | 2369 fps | 98.6% |
| Bofors RP3 | <<locked>> | 94% | 47,877 psi | 87% | 2388 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 84% | 46,963 psi | 85% | 2274 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 88% | 48,994 psi | 89% | 2392 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 47,152 psi | 86% | 2421 fps | 99.1% |
| Hodgdon H322 | <<locked>> | 82% | 48,095 psi | 87% | 2323 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 48,849 psi | 89% | 2349 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 49,559 psi | 90% | 2395 fps | 98.4% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 48,066 psi | 87% | 2425 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 88% | 48,515 psi | 88% | 2372 fps | 99.7% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 40,785 psi | 74% | 2287 fps | 98.7% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 49,850 psi | 90% | 2441 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,708 psi | 63% | 1424 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 49,835 psi | 90% | 2375 fps | 99.7% |
| IMR 3031 | <<locked>> | 88% | 47,645 psi | 86% | 2362 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 48,689 psi | 88% | 2346 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 90% | 49,429 psi | 90% | 2326 fps | 96.1% |
| IMR 4451 Enduron | <<locked>> | 96% | 48,283 psi | 88% | 2339 fps | 95.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 42,482 psi | 77% | 2333 fps | 97.8% |
| IMR 4895 | <<locked>> | 90% | 47,050 psi | 85% | 2379 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 86% | 47,587 psi | 86% | 2326 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 82% | 47,210 psi | 86% | 2313 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 46,659 psi | 85% | 2343 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 48,834 psi | 89% | 2306 fps | 99.4% |
| Lovex S062 | <<locked>> | 92% | 48,095 psi | 87% | 2346 fps | 99.9% |
| Lovex S065ᴾ | <<locked>> | 100% | 49,864 psi | 90% | 2375 fps | 97.7% |
| Lovex S070ᴾ | <<locked>> | 100% | 47,210 psi | 86% | 2356 fps | 96% |
| Norma 201 | <<locked>> | 88% | 47,166 psi | 86% | 2320 fps | 99.8% |
| Norma 202 | <<locked>> | 88% | 47,384 psi | 86% | 2326 fps | 100% |
| Norma 203B | <<locked>> | 92% | 48,138 psi | 87% | 2385 fps | 99.4% |
| Norma URPᴾ | <<locked>> | 100% | 44,483 psi | 81% | 2375 fps | 98% |
| Ramshot Big Game | <<locked>> | 92% | 47,863 psi | 87% | 2402 fps | 99.3% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 44,005 psi | 80% | 2365 fps | 95.9% |
| Ramshot TAC | <<locked>> | 86% | 47,906 psi | 87% | 2336 fps | 97.5% |
| Ramshot Wild Boar | <<locked>> | 86% | 46,789 psi | 85% | 2352 fps | 99.2% |
| Ramshot X-Terminator | <<locked>> | 84% | 48,689 psi | 88% | 2326 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,983 psi | 63% | 1460 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 47,340 psi | 86% | 2313 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 47,268 psi | 86% | 2336 fps | 96.4% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 48,211 psi | 87% | 2448 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 48,095 psi | 87% | 2477 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 44,135 psi | 80% | 2398 fps | 97.7% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 45,455 psi | 82% | 2415 fps | 97.2% |
| Rottweil R 901 | <<locked>> | 86% | 48,573 psi | 88% | 2310 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 47,514 psi | 86% | 2316 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 96% | 47,776 psi | 87% | 2379 fps | 99.7% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 49,864 psi | 90% | 2375 fps | 97.7% |
| Shooters World Match Rifle | <<locked>> | 88% | 46,659 psi | 85% | 2343 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 48,095 psi | 87% | 2346 fps | 99.9% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 47,210 psi | 86% | 2356 fps | 96% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 49,574 psi | 90% | 2434 fps | 99.5% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 48,791 psi | 89% | 2356 fps | 98.1% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 49,632 psi | 90% | 2382 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 49,197 psi | 89% | 2274 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 48,689 psi | 88% | 2274 fps | 100% |
| Somchem S321 | <<locked>> | 84% | 48,370 psi | 88% | 2356 fps | 99.9% |
| Somchem S335 | <<locked>> | 88% | 48,428 psi | 88% | 2277 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 48,298 psi | 88% | 2352 fps | 99.3% |
| Somchem S355 | <<locked>> | 96% | 48,631 psi | 88% | 2379 fps | 99.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 39,697 psi | 72% | 2336 fps | 99.5% |
| Vihtavuori N130 | <<locked>> | 84% | 49,342 psi | 90% | 2247 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 49,211 psi | 89% | 2264 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 49,501 psi | 90% | 2333 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 47,761 psi | 87% | 2310 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 46,818 psi | 85% | 2323 fps | 99.9% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 46,963 psi | 85% | 2375 fps | 98.3% |
| Vihtavuori N530 | <<locked>> | 86% | 47,805 psi | 87% | 2323 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 92% | 48,994 psi | 89% | 2349 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 45,847 psi | 83% | 2382 fps | 98% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 48,138 psi | 87% | 2365 fps | 99.7% |
| Winchester 748 | <<locked>> | 86% | 46,760 psi | 85% | 2362 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 48,298 psi | 88% | 2428 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 90% | 48,907 psi | 89% | 2388 fps | 99.7% |
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% | 40,944 psi | 74% | 2172 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 44,266 psi | 80% | 2260 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 33,344 psi | 61% | 2103 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 39,653 psi | 72% | 2228 fps | 99.9% |
| Accurate 4064 | <<locked>> | 80% | 31,575 psi | 57% | 2090 fps | 99.5% |
| Accurate 4350 | <<locked>> | 92% | 33,576 psi | 61% | 2192 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 37,666 psi | 68% | 2188 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 80% | 32,155 psi | 58% | 2060 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,624 psi | 72% | 2198 fps | 99% |
| Alliant AR-Comp | <<locked>> | 80% | 38,493 psi | 70% | 2195 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 45,774 psi | 83% | 2362 fps | 99.5% |
| Alliant Power Pro 2000-MR | 54.8 gr | 80% | 33,721 psi | 61% | 2192 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 30,937 psi | 56% | 2077 fps | 96.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 46,528 psi | 84% | 2254 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 33,576 psi | 61% | 2129 fps | 95.9% |
| Alliant Reloder-16 | <<locked>> | 92% | 35,143 psi | 64% | 2205 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 84% | 30,603 psi | 56% | 2129 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 36,376 psi | 66% | 2185 fps | 96.1% |
| Bofors RP3 | <<locked>> | 80% | 30,182 psi | 55% | 2077 fps | 96.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 41,713 psi | 76% | 2195 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,463 psi | 68% | 2211 fps | 99.1% |
| Hodgdon CFE223 | <<locked>> | 80% | 41,147 psi | 75% | 2323 fps | 98% |
| Hodgdon H322 | <<locked>> | 80% | 45,034 psi | 82% | 2280 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 45,672 psi | 83% | 2303 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 35,781 psi | 65% | 2169 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 98% | 45,107 psi | 82% | 2379 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 37,884 psi | 69% | 2198 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 30,124 psi | 55% | 2070 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,823 psi | 61% | 2169 fps | 97.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,672 psi | 47% | 1266 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,434 psi | 66% | 2156 fps | 97.8% |
| IMR 3031 | <<locked>> | 80% | 36,666 psi | 67% | 2198 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 33,663 psi | 61% | 2090 fps | 96% |
| IMR 4166 Enduron | <<locked>> | 88% | 46,470 psi | 84% | 2280 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 94% | 45,629 psi | 83% | 2300 fps | 95.1% |
| IMR 4831 | <<locked>> | 94% | 35,143 psi | 64% | 2201 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 34,345 psi | 62% | 2156 fps | 96.9% |
| IMR 8208 XBR | <<locked>> | 80% | 39,624 psi | 72% | 2198 fps | 99% |
| Lovex D073.5 | <<locked>> | 80% | 44,063 psi | 80% | 2267 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 35,737 psi | 65% | 2169 fps | 99.5% |
| Lovex S060 | <<locked>> | 80% | 38,508 psi | 70% | 2139 fps | 97.8% |
| Lovex S062 | <<locked>> | 80% | 33,315 psi | 60% | 2096 fps | 97.8% |
| Lovex S065 | <<locked>> | 92% | 39,233 psi | 71% | 2208 fps | 95.2% |
| Lovex S070 | <<locked>> | 98% | 44,483 psi | 81% | 2313 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 36,796 psi | 67% | 2149 fps | 98.6% |
| Norma 202 | <<locked>> | 80% | 36,825 psi | 67% | 2162 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 32,982 psi | 60% | 2119 fps | 96.4% |
| Norma URP | <<locked>> | 92% | 34,650 psi | 63% | 2195 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 32,314 psi | 59% | 2123 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 98% | 41,336 psi | 75% | 2320 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 39,407 psi | 72% | 2195 fps | 95.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 38,406 psi | 70% | 2215 fps | 97.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 42,757 psi | 78% | 2238 fps | 98.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,005 psi | 47% | 1302 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 44,454 psi | 81% | 2270 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 44,179 psi | 80% | 2287 fps | 95.7% |
| ReloadSwiss RS 52 | 53.1 gr | 80% | 34,389 psi | 62% | 2201 fps | 96.2% |
| ReloadSwiss RS 60 | 54 gr | 80% | 28,689 psi | 52% | 2090 fps | 97.3% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 36,303 psi | 66% | 2257 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 39,943 psi | 72% | 2316 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 40,669 psi | 74% | 2192 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 35,070 psi | 64% | 2110 fps | 98.2% |
| Rottweil R 903 | <<locked>> | 80% | 28,442 psi | 52% | 2028 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 92% | 39,233 psi | 71% | 2208 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,737 psi | 65% | 2169 fps | 99.5% |
| Shooters World Precision | <<locked>> | 80% | 33,315 psi | 60% | 2096 fps | 97.8% |
| Shooters World SW4350 | <<locked>> | 98% | 44,483 psi | 81% | 2313 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 31,734 psi | 58% | 2116 fps | 95.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 37,246 psi | 68% | 2165 fps | 95.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 36,013 psi | 65% | 2159 fps | 97.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,638 psi | 70% | 2119 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,676 psi | 57% | 2008 fps | 99.7% |
| Somchem S321 | <<locked>> | 80% | 42,279 psi | 77% | 2264 fps | 99.5% |
| Somchem S335 | <<locked>> | 80% | 37,942 psi | 69% | 2119 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 37,014 psi | 67% | 2172 fps | 97.4% |
| Somchem S355 | <<locked>> | 80% | 29,588 psi | 54% | 2037 fps | 95.6% |
| Somchem S365 | <<locked>> | 88% | 27,369 psi | 50% | 2060 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 43,859 psi | 80% | 2175 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 38,740 psi | 70% | 2119 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,026 psi | 62% | 2103 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 34,795 psi | 63% | 2106 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 28,065 psi | 51% | 1988 fps | 96.6% |
| Vihtavuori N160 | <<locked>> | 92% | 36,535 psi | 66% | 2198 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 39,363 psi | 71% | 2192 fps | 99% |
| Vihtavuori N540 | <<locked>> | 80% | 33,475 psi | 61% | 2100 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 92% | 35,650 psi | 65% | 2205 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 30,661 psi | 56% | 2051 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 38,319 psi | 70% | 2231 fps | 99.4% |
| Winchester 760 | <<locked>> | 98% | 45,339 psi | 82% | 2382 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 35,201 psi | 64% | 2162 fps | 97.6% |
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 | Barnes Solid. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,477 fps; across all powders the maximum-charge window runs from 1,424 fps to 2,477 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 63–90 %, 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, Hodgdon H414 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, ReloadSwiss RS 52 rank at the top here: for .375 Hoelderlin with the .375 | 300gr | Barnes Solid 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.