Load Specifications
Load data in caliber .375 R Hoelderlin with .375 | 300gr | Reichenberg Super Penetra bullet and 82 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 60 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% | 44,889 psi | 86% | 2238 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 45,818 psi | 88% | 2290 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 47,224 psi | 90% | 2323 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 46,818 psi | 90% | 2343 fps | 100% |
| Accurate 4064 | <<locked>> | 94% | 47,036 psi | 90% | 2359 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 42,554 psi | 82% | 2359 fps | 97.8% |
| ADI AR 2206H | <<locked>> | 88% | 46,818 psi | 90% | 2349 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 92% | 44,918 psi | 86% | 2303 fps | 98.5% |
| ADI Benchmark 8208 | <<locked>> | 86% | 46,383 psi | 89% | 2313 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 86% | 45,455 psi | 87% | 2300 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 45,643 psi | 87% | 2431 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 46,746 psi | 90% | 2365 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 90% | 44,585 psi | 85% | 2336 fps | 98.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 43,395 psi | 83% | 2372 fps | 98% |
| Alliant Reloder-17 | <<locked>> | 98% | 46,717 psi | 89% | 2454 fps | 99.6% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 46,050 psi | 88% | 2356 fps | 98.4% |
| Bofors RP3 | <<locked>> | 94% | 46,282 psi | 89% | 2372 fps | 99.7% |
| Hodgdon Benchmark | <<locked>> | 84% | 45,774 psi | 88% | 2264 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 86% | 44,382 psi | 85% | 2333 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 84% | 45,890 psi | 88% | 2408 fps | 98.9% |
| Hodgdon H322 | <<locked>> | 82% | 46,804 psi | 90% | 2313 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 44,831 psi | 86% | 2333 fps | 97.6% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 46,804 psi | 90% | 2411 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 88% | 47,224 psi | 90% | 2359 fps | 99.6% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 39,523 psi | 76% | 2270 fps | 98.5% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 45,513 psi | 87% | 2382 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,374 psi | 66% | 1421 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 45,600 psi | 87% | 2320 fps | 99.4% |
| IMR 3031 | <<locked>> | 88% | 46,195 psi | 88% | 2349 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 47,224 psi | 90% | 2329 fps | 99% |
| IMR 4831ᴾ | <<locked>> | 100% | 41,060 psi | 79% | 2316 fps | 97.5% |
| IMR 4895 | <<locked>> | 90% | 45,687 psi | 88% | 2362 fps | 99.2% |
| IMR 8208 XBR | <<locked>> | 86% | 46,383 psi | 89% | 2313 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 82% | 45,585 psi | 87% | 2297 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 88% | 45,107 psi | 86% | 2329 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 44,802 psi | 86% | 2251 fps | 98.9% |
| Lovex S062 | <<locked>> | 92% | 46,630 psi | 89% | 2333 fps | 99.8% |
| Lovex S065 | <<locked>> | 98% | 45,484 psi | 87% | 2316 fps | 96.8% |
| Norma 201 | <<locked>> | 88% | 45,701 psi | 88% | 2303 fps | 99.7% |
| Norma 202 | <<locked>> | 88% | 45,963 psi | 88% | 2313 fps | 100% |
| Norma 203B | <<locked>> | 92% | 46,731 psi | 90% | 2372 fps | 99.3% |
| Norma URPᴾ | <<locked>> | 100% | 43,207 psi | 83% | 2359 fps | 97.7% |
| Ramshot Big Game | <<locked>> | 92% | 46,601 psi | 89% | 2388 fps | 99.2% |
| Ramshot TAC | <<locked>> | 86% | 46,485 psi | 89% | 2320 fps | 97.2% |
| Ramshot Wild Boar | <<locked>> | 86% | 45,498 psi | 87% | 2339 fps | 99.1% |
| Ramshot X-Terminator | <<locked>> | 82% | 44,411 psi | 85% | 2270 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,563 psi | 66% | 1453 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 46,093 psi | 88% | 2300 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 45,730 psi | 88% | 2320 fps | 96.1% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 46,833 psi | 90% | 2431 fps | 99% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 46,630 psi | 89% | 2461 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 42,757 psi | 82% | 2382 fps | 97.4% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 44,280 psi | 85% | 2398 fps | 96.8% |
| Rottweil R 901 | <<locked>> | 86% | 46,862 psi | 90% | 2297 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 45,963 psi | 88% | 2300 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 96% | 46,195 psi | 88% | 2362 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 98% | 45,484 psi | 87% | 2316 fps | 96.8% |
| Shooters World Match Rifle | <<locked>> | 88% | 45,107 psi | 86% | 2329 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 46,630 psi | 89% | 2333 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 45,049 psi | 86% | 2372 fps | 99% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 44,150 psi | 85% | 2290 fps | 97.3% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 45,179 psi | 87% | 2323 fps | 99% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 45,049 psi | 86% | 2224 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 44,643 psi | 86% | 2228 fps | 100% |
| Somchem S321 | <<locked>> | 84% | 46,760 psi | 90% | 2339 fps | 99.9% |
| Somchem S335 | <<locked>> | 88% | 47,036 psi | 90% | 2264 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 47,094 psi | 90% | 2339 fps | 99.2% |
| Somchem S355 | <<locked>> | 96% | 47,166 psi | 90% | 2365 fps | 99.6% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,203 psi | 73% | 2313 fps | 99.3% |
| Vihtavuori N130 | <<locked>> | 82% | 45,237 psi | 87% | 2201 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 45,121 psi | 86% | 2218 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 44,860 psi | 86% | 2280 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 46,456 psi | 89% | 2297 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 45,484 psi | 87% | 2310 fps | 99.9% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 45,672 psi | 87% | 2359 fps | 98% |
| Vihtavuori N530 | <<locked>> | 86% | 46,543 psi | 89% | 2310 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 90% | 44,498 psi | 85% | 2293 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 44,527 psi | 85% | 2365 fps | 97.7% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 47,021 psi | 90% | 2352 fps | 99.5% |
| Winchester 748 | <<locked>> | 86% | 45,426 psi | 87% | 2349 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 46,804 psi | 90% | 2411 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 88% | 44,585 psi | 85% | 2329 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% | 39,436 psi | 76% | 2159 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 42,685 psi | 82% | 2247 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 31,604 psi | 61% | 2083 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 38,116 psi | 73% | 2208 fps | 99.7% |
| Accurate 4064 | <<locked>> | 80% | 29,950 psi | 57% | 2070 fps | 99.2% |
| Accurate 4350 | <<locked>> | 94% | 34,301 psi | 66% | 2215 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 36,347 psi | 70% | 2169 fps | 97.3% |
| ADI AR 2208 | <<locked>> | 82% | 32,953 psi | 63% | 2087 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,406 psi | 74% | 2185 fps | 98.8% |
| Alliant AR-Comp | <<locked>> | 80% | 37,072 psi | 71% | 2182 fps | 100% |
| Alliant Power Pro 2000-MR | 56 gr | 82% | 34,940 psi | 67% | 2224 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 29,631 psi | 57% | 2057 fps | 96.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 32,300 psi | 62% | 2110 fps | 95.5% |
| Alliant Reloder-16 | <<locked>> | 94% | 36,245 psi | 69% | 2234 fps | 95.8% |
| Alliant Reloder-17 | 57.8 gr | 86% | 31,372 psi | 60% | 2156 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 35,215 psi | 67% | 2169 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 28,703 psi | 55% | 2051 fps | 96% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,567 psi | 78% | 2182 fps | 99.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 36,071 psi | 69% | 2195 fps | 98.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 39,856 psi | 76% | 2306 fps | 97.8% |
| Hodgdon H322 | <<locked>> | 80% | 43,801 psi | 84% | 2270 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 36,782 psi | 70% | 2195 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 98% | 43,845 psi | 84% | 2362 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 36,579 psi | 70% | 2182 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 30,734 psi | 59% | 2093 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 32,634 psi | 63% | 2149 fps | 97.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,483 psi | 49% | 1266 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 35,288 psi | 68% | 2142 fps | 97.5% |
| IMR 3031 | <<locked>> | 80% | 35,259 psi | 68% | 2182 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 32,474 psi | 62% | 2070 fps | 95.5% |
| IMR 4831 | <<locked>> | 94% | 33,823 psi | 65% | 2182 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 33,025 psi | 63% | 2136 fps | 96.5% |
| IMR 8208 XBR | <<locked>> | 80% | 38,406 psi | 74% | 2185 fps | 98.8% |
| Lovex D073.5 | <<locked>> | 80% | 42,453 psi | 81% | 2251 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 34,214 psi | 66% | 2149 fps | 99.3% |
| Lovex S060 | <<locked>> | 80% | 37,347 psi | 72% | 2126 fps | 97.5% |
| Lovex S062 | <<locked>> | 80% | 31,952 psi | 61% | 2077 fps | 97.4% |
| Lovex S065 | <<locked>> | 94% | 40,190 psi | 77% | 2231 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 35,534 psi | 68% | 2133 fps | 98.3% |
| Norma 202 | <<locked>> | 80% | 35,491 psi | 68% | 2146 fps | 99.7% |
| Norma 203B | <<locked>> | 80% | 31,662 psi | 61% | 2100 fps | 95.9% |
| Norma URP | <<locked>> | 94% | 35,694 psi | 68% | 2224 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 31,140 psi | 60% | 2103 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 38,218 psi | 73% | 2178 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 80% | 37,188 psi | 71% | 2198 fps | 97.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 41,510 psi | 80% | 2221 fps | 98.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,570 psi | 49% | 1296 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 43,178 psi | 83% | 2257 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 42,931 psi | 82% | 2274 fps | 95.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 33,069 psi | 63% | 2182 fps | 95.7% |
| ReloadSwiss RS 60 | 53.8 gr | 80% | 27,572 psi | 53% | 2067 fps | 96.7% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 34,795 psi | 67% | 2234 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 38,595 psi | 74% | 2293 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 39,001 psi | 75% | 2172 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 80% | 33,634 psi | 64% | 2090 fps | 97.8% |
| Rottweil R 903 | <<locked>> | 82% | 28,950 psi | 55% | 2051 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 94% | 40,190 psi | 77% | 2231 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 34,214 psi | 66% | 2149 fps | 99.3% |
| Shooters World Precision | <<locked>> | 80% | 31,952 psi | 61% | 2077 fps | 97.4% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 30,574 psi | 59% | 2096 fps | 95.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 35,911 psi | 69% | 2149 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 34,780 psi | 67% | 2142 fps | 96.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,391 psi | 72% | 2106 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,530 psi | 58% | 1995 fps | 99.5% |
| Somchem S321 | <<locked>> | 80% | 40,930 psi | 78% | 2251 fps | 99.4% |
| Somchem S335 | <<locked>> | 80% | 36,796 psi | 70% | 2110 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 35,810 psi | 69% | 2156 fps | 97% |
| Somchem S355 | <<locked>> | 80% | 28,384 psi | 54% | 2018 fps | 95.1% |
| Somchem S365 | <<locked>> | 88% | 26,194 psi | 50% | 2037 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 42,540 psi | 81% | 2165 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 37,550 psi | 72% | 2106 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 32,590 psi | 62% | 2087 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 33,547 psi | 64% | 2093 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 80% | 26,789 psi | 51% | 1965 fps | 96.1% |
| Vihtavuori N160 | <<locked>> | 92% | 35,317 psi | 68% | 2182 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 38,087 psi | 73% | 2175 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 80% | 32,169 psi | 62% | 2083 fps | 99.2% |
| Vihtavuori N550 | <<locked>> | 94% | 36,622 psi | 70% | 2228 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 29,602 psi | 57% | 2031 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 37,014 psi | 71% | 2215 fps | 99.3% |
| Winchester 760 | <<locked>> | 98% | 43,845 psi | 84% | 2362 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 33,953 psi | 65% | 2146 fps | 97.3% |
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 | Reichenberg Super Penetra. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,461 fps; across all powders the maximum-charge window runs from 1,421 fps to 2,461 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 66–90 %, 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for .375 R Hoelderlin with the .375 | 300gr | Reichenberg Super Penetra 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.