Load Specifications
Load data in caliber .375 R Hoelderlin with .375 | 300gr | Woodleigh HS bullet and 82 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% | 46,064 psi | 88% | 2244 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 47,137 psi | 90% | 2300 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 45,803 psi | 88% | 2293 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 46,398 psi | 89% | 2336 fps | 100% |
| Accurate 4064 | <<locked>> | 92% | 45,629 psi | 87% | 2329 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 43,700 psi | 84% | 2369 fps | 97.9% |
| ADI AR 2206H | <<locked>> | 86% | 45,005 psi | 86% | 2282 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 92% | 45,847 psi | 88% | 2279 fps | 98.3% |
| ADI Benchmark 8208 | <<locked>> | 84% | 44,440 psi | 85% | 2274 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 86% | 46,557 psi | 89% | 2278 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 46,673 psi | 89% | 2405 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 44,947 psi | 86% | 2299 fps | 99.3% |
| Alliant Reloder-15 | <<locked>> | 90% | 45,498 psi | 87% | 2310 fps | 98.4% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 45,339 psi | 87% | 2346 fps | 97.7% |
| Alliant Reloder-17 | <<locked>> | 96% | 44,657 psi | 86% | 2381 fps | 99.1% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 46,876 psi | 90% | 2330 fps | 98.2% |
| Bofors RP3 | <<locked>> | 92% | 44,614 psi | 85% | 2307 fps | 99.4% |
| Hodgdon Benchmark | <<locked>> | 84% | 46,702 psi | 89% | 2240 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 86% | 45,556 psi | 87% | 2343 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 84% | 46,891 psi | 90% | 2415 fps | 99% |
| Hodgdon H322 | <<locked>> | 84% | 47,065 psi | 90% | 2281 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 46,021 psi | 88% | 2311 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 86% | 45,324 psi | 87% | 2291 fps | 99.2% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 41,191 psi | 79% | 2246 fps | 98.2% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 46,383 psi | 89% | 2388 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,462 psi | 68% | 1406 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 45,643 psi | 87% | 2310 fps | 99.3% |
| IMR 3031 | <<locked>> | 90% | 45,803 psi | 88% | 2307 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 44,788 psi | 86% | 2283 fps | 98.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 37,492 psi | 72% | 2212 fps | 95.9% |
| IMR 4895 | <<locked>> | 90% | 46,586 psi | 89% | 2338 fps | 99.1% |
| IMR 8208 XBR | <<locked>> | 84% | 44,440 psi | 85% | 2246 fps | 99.4% |
| Lovex D073.5 | <<locked>> | 82% | 46,934 psi | 90% | 2277 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 88% | 46,398 psi | 89% | 2307 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 45,658 psi | 87% | 2228 fps | 98.8% |
| Lovex S062 | <<locked>> | 90% | 44,860 psi | 86% | 2267 fps | 99.5% |
| Lovex S065 | <<locked>> | 98% | 46,847 psi | 90% | 2295 fps | 96.6% |
| Norma 201 | <<locked>> | 88% | 46,949 psi | 90% | 2284 fps | 99.7% |
| Norma 202 | <<locked>> | 88% | 47,079 psi | 90% | 2292 fps | 100% |
| Norma 203B | <<locked>> | 90% | 44,686 psi | 86% | 2300 fps | 98.7% |
| Norma URPᴾ | <<locked>> | 100% | 44,338 psi | 85% | 2333 fps | 97.4% |
| Ramshot Big Game | <<locked>> | 90% | 44,556 psi | 85% | 2318 fps | 98.5% |
| Ramshot TAC | <<locked>> | 84% | 44,454 psi | 85% | 2248 fps | 96.2% |
| Ramshot Wild Boar | <<locked>> | 86% | 46,557 psi | 89% | 2315 fps | 98.9% |
| Ramshot X-Terminator | <<locked>> | 82% | 45,368 psi | 87% | 2245 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,070 psi | 67% | 1440 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 47,050 psi | 90% | 2278 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 46,833 psi | 90% | 2296 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 44,657 psi | 86% | 2356 fps | 98.3% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 44,556 psi | 85% | 2388 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 44,599 psi | 85% | 2356 fps | 97.1% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 46,079 psi | 88% | 2371 fps | 96.5% |
| Rottweil R 901 | <<locked>> | 84% | 45,324 psi | 87% | 2234 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 47,224 psi | 90% | 2280 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 94% | 44,251 psi | 85% | 2295 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 98% | 46,847 psi | 90% | 2295 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 88% | 46,398 psi | 89% | 2307 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 44,860 psi | 86% | 2267 fps | 99.5% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 46,818 psi | 90% | 2346 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 46,122 psi | 88% | 2349 fps | 98.9% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 45,295 psi | 87% | 2270 fps | 97% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 46,209 psi | 89% | 2300 fps | 98.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 46,064 psi | 88% | 2202 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 45,339 psi | 87% | 2202 fps | 100% |
| Somchem S321 | <<locked>> | 82% | 44,759 psi | 86% | 2271 fps | 99.6% |
| Somchem S335 | <<locked>> | 86% | 45,252 psi | 87% | 2204 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 44,976 psi | 86% | 2271 fps | 98.6% |
| Somchem S355 | <<locked>> | 94% | 45,411 psi | 87% | 2300 fps | 99.1% |
| Somchem S365ᴾ | <<locked>> | 100% | 39,972 psi | 77% | 2293 fps | 99.2% |
| Unknown powder | <<locked>> | 98% | 45,876 psi | 88% | 2345 fps | 97.1% |
| Vihtavuori N130 | <<locked>> | 82% | 45,223 psi | 87% | 2170 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 45,585 psi | 87% | 2193 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 46,050 psi | 88% | 2287 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 46,586 psi | 89% | 2266 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 47,050 psi | 90% | 2286 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 98% | 45,803 psi | 88% | 2319 fps | 97.6% |
| Vihtavuori N530 | <<locked>> | 84% | 46,847 psi | 90% | 2291 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 90% | 46,282 psi | 89% | 2289 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 45,890 psi | 88% | 2361 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 44,788 psi | 86% | 2282 fps | 99% |
| Winchester 748 | <<locked>> | 84% | 46,934 psi | 90% | 2334 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 82% | 46,543 psi | 89% | 2321 fps | 99.3% |
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% | 40,596 psi | 78% | 2165 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 43,976 psi | 84% | 2254 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 33,199 psi | 64% | 2096 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 37,695 psi | 72% | 2201 fps | 99.7% |
| Accurate 4064 | <<locked>> | 80% | 31,430 psi | 60% | 2087 fps | 99.4% |
| Accurate 4350 | <<locked>> | 92% | 33,170 psi | 64% | 2182 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 37,362 psi | 72% | 2149 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 82% | 33,866 psi | 65% | 2066 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,349 psi | 75% | 2188 fps | 98.9% |
| Alliant AR-Comp | <<locked>> | 80% | 38,116 psi | 73% | 2161 fps | 100% |
| Alliant Power Pro 2000-MR | 55.8 gr | 82% | 35,911 psi | 69% | 2202 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 30,661 psi | 59% | 2038 fps | 96% |
| Alliant Reloder-15 | <<locked>> | 80% | 33,315 psi | 64% | 2090 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 94% | 37,014 psi | 71% | 2207 fps | 95.5% |
| Alliant Reloder-17 | 57.6 gr | 86% | 32,329 psi | 62% | 2136 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 36,158 psi | 69% | 2146 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 29,921 psi | 57% | 2036 fps | 95.9% |
| Hodgdon Benchmark | <<locked>> | 80% | 41,423 psi | 79% | 2158 fps | 99.3% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,173 psi | 71% | 2205 fps | 99% |
| Hodgdon CFE223 | <<locked>> | 80% | 40,872 psi | 78% | 2313 fps | 97.9% |
| Hodgdon H322 | <<locked>> | 80% | 41,626 psi | 80% | 2200 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 37,913 psi | 73% | 2174 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 37,608 psi | 72% | 2159 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 31,734 psi | 61% | 2076 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 31,676 psi | 61% | 2116 fps | 96.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,701 psi | 49% | 1253 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 33,562 psi | 64% | 2096 fps | 96.9% |
| IMR 3031 | <<locked>> | 80% | 33,301 psi | 64% | 2105 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 33,069 psi | 63% | 2073 fps | 95.7% |
| IMR 4831 | <<locked>> | 98% | 35,317 psi | 68% | 2170 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 34,069 psi | 65% | 2116 fps | 96.3% |
| IMR 8208 XBR | <<locked>> | 80% | 39,349 psi | 75% | 2162 fps | 98.7% |
| Lovex D073.5 | <<locked>> | 80% | 43,758 psi | 84% | 2231 fps | 99.7% |
| Lovex D073.6 | <<locked>> | 80% | 35,433 psi | 68% | 2131 fps | 99.2% |
| Lovex S060 | <<locked>> | 80% | 38,232 psi | 73% | 2103 fps | 97.3% |
| Lovex S062 | <<locked>> | 80% | 33,025 psi | 63% | 2058 fps | 97.3% |
| Lovex S065 | <<locked>> | 94% | 41,350 psi | 79% | 2210 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 36,709 psi | 70% | 2115 fps | 98.2% |
| Norma 202 | <<locked>> | 80% | 36,521 psi | 70% | 2124 fps | 99.7% |
| Norma 203B | <<locked>> | 80% | 32,721 psi | 63% | 2081 fps | 95.7% |
| Norma URP | <<locked>> | 94% | 36,564 psi | 70% | 2198 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 32,111 psi | 62% | 2084 fps | 95% |
| Ramshot TAC | <<locked>> | 82% | 41,669 psi | 80% | 2202 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 38,159 psi | 73% | 2176 fps | 97.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 42,482 psi | 81% | 2200 fps | 98.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,846 psi | 50% | 1283 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 44,135 psi | 85% | 2234 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 44,005 psi | 84% | 2252 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 34,084 psi | 65% | 2161 fps | 95.5% |
| ReloadSwiss RS 60 | 53.6 gr | 80% | 28,514 psi | 55% | 2049 fps | 96.5% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 38,276 psi | 73% | 2259 fps | 95.6% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 42,192 psi | 81% | 2318 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 40,321 psi | 77% | 2155 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 80% | 34,780 psi | 67% | 2071 fps | 97.7% |
| Rottweil R 903 | <<locked>> | 82% | 30,124 psi | 58% | 2034 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 94% | 41,350 psi | 79% | 2210 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,433 psi | 68% | 2131 fps | 99.2% |
| Shooters World Precision | <<locked>> | 80% | 33,025 psi | 63% | 2058 fps | 97.3% |
| Shooters World SW4350 | <<locked>> | 98% | 44,150 psi | 85% | 2306 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 33,576 psi | 64% | 2122 fps | 95.7% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 39,682 psi | 76% | 2178 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 35,752 psi | 68% | 2120 fps | 96.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,377 psi | 74% | 2085 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,415 psi | 60% | 1974 fps | 99.4% |
| Somchem S321 | <<locked>> | 80% | 42,032 psi | 81% | 2228 fps | 99.3% |
| Somchem S335 | <<locked>> | 80% | 37,840 psi | 72% | 2090 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 36,753 psi | 70% | 2133 fps | 96.8% |
| Somchem S355 | <<locked>> | 80% | 29,501 psi | 56% | 2002 fps | 95% |
| Somchem S365 | <<locked>> | 88% | 27,209 psi | 52% | 2021 fps | 95% |
| Unknown powder | <<locked>> | 94% | 40,263 psi | 77% | 2252 fps | 95.6% |
| Vihtavuori N130 | <<locked>> | 80% | 42,598 psi | 82% | 2133 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 35,940 psi | 69% | 2046 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,678 psi | 65% | 2096 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 34,171 psi | 65% | 2067 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 82% | 26,658 psi | 51% | 1924 fps | 95.4% |
| Vihtavuori N160 | <<locked>> | 92% | 37,797 psi | 72% | 2185 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 41,089 psi | 79% | 2201 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 80% | 33,692 psi | 65% | 2079 fps | 99.2% |
| Vihtavuori N550 | <<locked>> | 92% | 37,840 psi | 72% | 2225 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 32,401 psi | 62% | 2056 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 41,002 psi | 79% | 2243 fps | 99.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 43,468 psi | 83% | 2274 fps | 98.9% |
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 82 powders for .375 R Hoelderlin loaded with the .375 | 300gr | Woodleigh HS. Hodgdon CFE223 delivers the highest muzzle velocity at 2,415 fps; across all powders the maximum-charge window runs from 1,406 fps to 2,415 fps. Accurate 4350 gives the best case fill at 100 %, and 82 of the 82 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (360 MPa), the top charges use 67–90 %, 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 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, Alliant Power Pro 2000-MR rank at the top here: for .375 R Hoelderlin with the .375 | 300gr | Woodleigh HS 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.