Load Specifications
Load data in caliber .375 R Hoelderlin with .375 | 300gr | Woodleigh FMJ bullet and 79 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 Hodgdon LEVERevolution.
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>> | 82% | 45,440 psi | 87% | 2254 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 45,745 psi | 88% | 2310 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 46,021 psi | 88% | 2352 fps | 100% |
| Accurate 4064 | <<locked>> | 90% | 45,687 psi | 88% | 2349 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 47,152 psi | 90% | 2441 fps | 98.8% |
| ADI AR 2206H | <<locked>> | 84% | 44,527 psi | 85% | 2296 fps | 98.9% |
| ADI AR 2208 | <<locked>> | 90% | 45,310 psi | 87% | 2294 fps | 98.5% |
| ADI Benchmark 8208 | <<locked>> | 84% | 46,760 psi | 90% | 2333 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 84% | 46,195 psi | 88% | 2290 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 45,992 psi | 88% | 2421 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 44,527 psi | 85% | 2314 fps | 99.5% |
| Alliant Reloder-15 | <<locked>> | 88% | 45,295 psi | 87% | 2330 fps | 98.7% |
| Alliant Reloder-16 | <<locked>> | 98% | 44,135 psi | 85% | 2368 fps | 98.1% |
| Alliant Reloder-17 | <<locked>> | 96% | 47,224 psi | 90% | 2449 fps | 99.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,011 psi | 65% | 2182 fps | 96.2% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 46,398 psi | 89% | 2346 fps | 98.4% |
| Bofors RP3 | <<locked>> | 90% | 44,367 psi | 85% | 2323 fps | 99.5% |
| Hodgdon Benchmark | <<locked>> | 82% | 46,006 psi | 88% | 2253 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 84% | 45,107 psi | 86% | 2356 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 46,253 psi | 89% | 2428 fps | 99.2% |
| Hodgdon H322 | <<locked>> | 82% | 46,572 psi | 89% | 2293 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 45,600 psi | 87% | 2328 fps | 97.7% |
| Hodgdon H4895 | <<locked>> | 84% | 44,860 psi | 86% | 2306 fps | 99.3% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 43,250 psi | 83% | 2314 fps | 99% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 45,992 psi | 88% | 2405 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,781 psi | 69% | 1431 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 45,020 psi | 86% | 2326 fps | 99.5% |
| IMR 3031 | <<locked>> | 88% | 45,614 psi | 87% | 2322 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 47,007 psi | 90% | 2343 fps | 99.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 40,509 psi | 78% | 2279 fps | 97.1% |
| IMR 4895 | <<locked>> | 88% | 46,398 psi | 89% | 2356 fps | 99.3% |
| IMR 8208 XBR | <<locked>> | 84% | 46,760 psi | 90% | 2304 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 86% | 46,021 psi | 88% | 2322 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 44,933 psi | 86% | 2240 fps | 99% |
| Lovex S062 | <<locked>> | 88% | 44,556 psi | 85% | 2284 fps | 99.7% |
| Lovex S065 | <<locked>> | 96% | 46,470 psi | 89% | 2317 fps | 97% |
| Norma 201 | <<locked>> | 86% | 46,412 psi | 89% | 2298 fps | 99.8% |
| Norma 202 | <<locked>> | 86% | 46,615 psi | 89% | 2305 fps | 100% |
| Norma 203B | <<locked>> | 88% | 44,527 psi | 85% | 2320 fps | 99% |
| Norma URP | <<locked>> | 98% | 44,802 psi | 86% | 2358 fps | 97.8% |
| Ramshot Big Game | <<locked>> | 90% | 47,210 psi | 90% | 2383 fps | 99.2% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 46,601 psi | 89% | 2393 fps | 96.5% |
| Ramshot TAC | <<locked>> | 84% | 46,731 psi | 90% | 2309 fps | 97.2% |
| Ramshot Wild Boar | <<locked>> | 84% | 45,759 psi | 88% | 2325 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,302 psi | 68% | 1465 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 46,412 psi | 89% | 2314 fps | 96.2% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 44,324 psi | 85% | 2374 fps | 98.6% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 47,224 psi | 90% | 2455 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 44,788 psi | 86% | 2380 fps | 97.6% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 44,672 psi | 86% | 2393 fps | 97% |
| Rottweil R 901 | <<locked>> | 82% | 44,976 psi | 86% | 2250 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 46,630 psi | 89% | 2295 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 94% | 47,094 psi | 90% | 2358 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 96% | 46,470 psi | 89% | 2317 fps | 97% |
| Shooters World Match Rifle | <<locked>> | 86% | 46,021 psi | 88% | 2322 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 44,556 psi | 85% | 2284 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 98% | 46,688 psi | 89% | 2372 fps | 96.3% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 45,759 psi | 88% | 2367 fps | 99.1% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 44,686 psi | 86% | 2284 fps | 97.3% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 45,672 psi | 87% | 2314 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 45,353 psi | 87% | 2214 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 44,918 psi | 86% | 2216 fps | 100% |
| Somchem S321 | <<locked>> | 82% | 47,137 psi | 90% | 2328 fps | 99.9% |
| Somchem S335 | <<locked>> | 84% | 44,628 psi | 85% | 2216 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 44,382 psi | 85% | 2284 fps | 98.8% |
| Somchem S355 | <<locked>> | 92% | 45,107 psi | 86% | 2317 fps | 99.3% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,974 psi | 80% | 2361 fps | 99.7% |
| Unknown powder | <<locked>> | 96% | 45,484 psi | 87% | 2365 fps | 97.5% |
| Vihtavuori N133 | <<locked>> | 86% | 45,063 psi | 86% | 2205 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 45,716 psi | 88% | 2300 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 46,180 psi | 88% | 2280 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 46,992 psi | 90% | 2306 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 96% | 45,701 psi | 88% | 2342 fps | 98% |
| Vihtavuori N530 | <<locked>> | 82% | 46,151 psi | 88% | 2303 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 88% | 45,788 psi | 88% | 2302 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 45,890 psi | 88% | 2384 fps | 98% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 35,694 psi | 68% | 2245 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 47,224 psi | 90% | 2346 fps | 99.6% |
| Winchester 748 | <<locked>> | 82% | 46,340 psi | 89% | 2346 fps | 100% |
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% | 42,714 psi | 82% | 2215 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 35,230 psi | 67% | 2149 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 40,059 psi | 77% | 2260 fps | 99.9% |
| Accurate 4064 | <<locked>> | 80% | 33,344 psi | 64% | 2139 fps | 99.8% |
| Accurate 4350 | <<locked>> | 90% | 33,330 psi | 64% | 2201 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 39,276 psi | 75% | 2206 fps | 98% |
| ADI AR 2208 | <<locked>> | 80% | 33,475 psi | 64% | 2078 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,263 psi | 79% | 2244 fps | 99.4% |
| Alliant AR-Comp | <<locked>> | 80% | 40,466 psi | 78% | 2211 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 35,317 psi | 68% | 2214 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,547 psi | 62% | 2096 fps | 97.1% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,201 psi | 67% | 2149 fps | 96.4% |
| Alliant Reloder-16 | <<locked>> | 90% | 34,621 psi | 66% | 2181 fps | 95.1% |
| Alliant Reloder-17 | 57.9 gr | 82% | 29,979 psi | 57% | 2101 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 98% | 31,517 psi | 60% | 2137 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 38,072 psi | 73% | 2204 fps | 96.6% |
| Bofors RP3 | <<locked>> | 80% | 31,908 psi | 61% | 2097 fps | 97% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,381 psi | 83% | 2212 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,363 psi | 75% | 2264 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 80% | 43,091 psi | 83% | 2375 fps | 98.7% |
| Hodgdon H322 | <<locked>> | 80% | 43,671 psi | 84% | 2251 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 37,521 psi | 72% | 2188 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 39,552 psi | 76% | 2215 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 29,689 psi | 57% | 2049 fps | 95.1% |
| Hodgdon LEVERevolution | 55.1 gr | 80% | 33,489 psi | 64% | 2178 fps | 97.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,020 psi | 50% | 1278 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 35,244 psi | 68% | 2152 fps | 97.8% |
| IMR 3031 | <<locked>> | 80% | 35,476 psi | 68% | 2161 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 32,808 psi | 63% | 2090 fps | 96% |
| IMR 4831 | <<locked>> | 96% | 35,317 psi | 68% | 2192 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 35,955 psi | 69% | 2174 fps | 97.3% |
| IMR 8208 XBR | <<locked>> | 80% | 41,263 psi | 79% | 2216 fps | 99.2% |
| Lovex D073.6 | <<locked>> | 80% | 37,623 psi | 72% | 2188 fps | 99.6% |
| Lovex S060 | <<locked>> | 80% | 39,871 psi | 76% | 2156 fps | 98.1% |
| Lovex S062 | <<locked>> | 80% | 34,780 psi | 67% | 2112 fps | 98.1% |
| Lovex S065 | <<locked>> | 92% | 41,060 psi | 79% | 2228 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 38,464 psi | 74% | 2167 fps | 98.8% |
| Norma 202 | <<locked>> | 80% | 38,566 psi | 74% | 2179 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 34,563 psi | 66% | 2139 fps | 96.8% |
| Norma URP | <<locked>> | 90% | 34,389 psi | 66% | 2176 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 33,895 psi | 65% | 2145 fps | 96.2% |
| Ramshot Hunter | <<locked>> | 98% | 44,773 psi | 86% | 2348 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 41,075 psi | 79% | 2215 fps | 95.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 40,263 psi | 77% | 2234 fps | 98.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,179 psi | 50% | 1307 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 43,511 psi | 83% | 2268 fps | 95.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 36,114 psi | 69% | 2225 fps | 96.6% |
| ReloadSwiss RS 60 | 56.5 gr | 80% | 29,979 psi | 57% | 2112 fps | 97.7% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 35,752 psi | 68% | 2232 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 39,117 psi | 75% | 2289 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 42,395 psi | 81% | 2209 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 36,593 psi | 70% | 2126 fps | 98.4% |
| Rottweil R 903 | <<locked>> | 80% | 30,008 psi | 57% | 2048 fps | 96% |
| Shooters World Long Rifle | <<locked>> | 92% | 41,060 psi | 79% | 2228 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,623 psi | 72% | 2188 fps | 99.6% |
| Shooters World Precision | <<locked>> | 80% | 34,780 psi | 67% | 2112 fps | 98.1% |
| Shooters World SW4350 | <<locked>> | 96% | 43,976 psi | 84% | 2329 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 31,096 psi | 60% | 2087 fps | 95.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 39,044 psi | 75% | 2189 fps | 95.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,681 psi | 72% | 2178 fps | 97.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,234 psi | 77% | 2136 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,112 psi | 63% | 2025 fps | 99.8% |
| Somchem S321 | <<locked>> | 80% | 44,222 psi | 85% | 2284 fps | 99.7% |
| Somchem S335 | <<locked>> | 80% | 39,610 psi | 76% | 2139 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 38,798 psi | 74% | 2192 fps | 97.7% |
| Somchem S355 | <<locked>> | 80% | 31,082 psi | 60% | 2056 fps | 96.1% |
| Somchem S365 | <<locked>> | 86% | 27,064 psi | 52% | 2038 fps | 95.5% |
| Unknown powder | <<locked>> | 90% | 37,565 psi | 72% | 2226 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 80% | 37,724 psi | 72% | 2094 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 35,723 psi | 68% | 2149 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 35,940 psi | 69% | 2118 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 26,484 psi | 51% | 1936 fps | 95.7% |
| Vihtavuori N160 | <<locked>> | 88% | 35,273 psi | 68% | 2160 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 43,366 psi | 83% | 2260 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 80% | 35,621 psi | 68% | 2135 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 88% | 35,476 psi | 68% | 2199 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 98% | 32,808 psi | 63% | 2199 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 30,095 psi | 58% | 2026 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 43,337 psi | 83% | 2301 fps | 99.9% |
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 79 powders for .375 R Hoelderlin loaded with the .375 | 300gr | Woodleigh FMJ. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,455 fps; across all powders the maximum-charge window runs from 1,431 fps to 2,455 fps. Accurate 4350 gives the best case fill at 100 %, and 79 of the 79 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (360 MPa), the top charges use 65–90 %, 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-23, Hodgdon Hybrid 100V 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, Hodgdon LEVERevolution rank at the top here: for .375 R Hoelderlin with the .375 | 300gr | Woodleigh FMJ 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.