Load Specifications
Load data in caliber .375 R Hoelderlin with .375 | 300gr | Rhino Solid bullet and 81 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.
A valid access license is required to use the Personalized Load Calculator.
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% | 45,063 psi | 86% | 2221 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 45,992 psi | 88% | 2274 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 44,585 psi | 85% | 2270 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 46,818 psi | 90% | 2323 fps | 100% |
| Accurate 4064 | <<locked>> | 92% | 44,469 psi | 85% | 2303 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 42,308 psi | 81% | 2336 fps | 97.5% |
| ADI AR 2206H | <<locked>> | 88% | 46,847 psi | 90% | 2329 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 92% | 44,933 psi | 86% | 2283 fps | 98.3% |
| ADI Benchmark 8208 | <<locked>> | 86% | 46,311 psi | 89% | 2290 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 86% | 45,440 psi | 87% | 2280 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 47,224 psi | 90% | 2372 fps | 99.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 45,629 psi | 87% | 2408 fps | 98.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 46,427 psi | 89% | 2343 fps | 99.6% |
| Alliant Reloder-15 | <<locked>> | 92% | 47,239 psi | 90% | 2356 fps | 98.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 43,308 psi | 83% | 2346 fps | 97.6% |
| Alliant Reloder-17 | <<locked>> | 98% | 46,485 psi | 89% | 2431 fps | 99.5% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 45,745 psi | 88% | 2333 fps | 98.1% |
| Bofors RP3 | <<locked>> | 94% | 46,180 psi | 88% | 2349 fps | 99.6% |
| Hodgdon Benchmark | <<locked>> | 84% | 45,905 psi | 88% | 2244 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 86% | 44,324 psi | 85% | 2313 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 84% | 45,701 psi | 88% | 2385 fps | 98.7% |
| Hodgdon H322 | <<locked>> | 82% | 46,789 psi | 90% | 2293 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 44,904 psi | 86% | 2313 fps | 97.3% |
| Hodgdon H4895 | <<locked>> | 86% | 44,251 psi | 85% | 2293 fps | 99.1% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 39,465 psi | 76% | 2247 fps | 98.2% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 45,179 psi | 87% | 2359 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,490 psi | 66% | 1407 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 45,527 psi | 87% | 2297 fps | 99.2% |
| IMR 3031 | <<locked>> | 88% | 46,021 psi | 88% | 2329 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 44,440 psi | 85% | 2267 fps | 98.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 40,857 psi | 78% | 2293 fps | 97.1% |
| IMR 4895 | <<locked>> | 90% | 45,542 psi | 87% | 2343 fps | 99.1% |
| IMR 8208 XBR | <<locked>> | 86% | 46,311 psi | 89% | 2290 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 82% | 45,629 psi | 87% | 2277 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 88% | 45,107 psi | 86% | 2310 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 44,672 psi | 86% | 2228 fps | 98.8% |
| Lovex S062 | <<locked>> | 92% | 46,586 psi | 89% | 2310 fps | 99.7% |
| Lovex S065 | <<locked>> | 98% | 45,614 psi | 87% | 2297 fps | 96.5% |
| Norma 201 | <<locked>> | 88% | 45,861 psi | 88% | 2287 fps | 99.7% |
| Norma 202 | <<locked>> | 88% | 45,992 psi | 88% | 2293 fps | 100% |
| Norma 203B | <<locked>> | 92% | 46,412 psi | 89% | 2346 fps | 99.1% |
| Norma URPᴾ | <<locked>> | 100% | 43,105 psi | 83% | 2339 fps | 97.4% |
| Ramshot Big Game | <<locked>> | 92% | 46,383 psi | 89% | 2365 fps | 99% |
| Ramshot TAC | <<locked>> | 86% | 46,470 psi | 89% | 2297 fps | 96.9% |
| Ramshot Wild Boar | <<locked>> | 86% | 45,382 psi | 87% | 2316 fps | 98.9% |
| Ramshot X-Terminator | <<locked>> | 82% | 44,469 psi | 85% | 2251 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,751 psi | 67% | 1444 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 45,948 psi | 88% | 2280 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 45,788 psi | 88% | 2297 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 46,427 psi | 89% | 2405 fps | 98.8% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 46,586 psi | 89% | 2438 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 42,482 psi | 81% | 2356 fps | 97% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 44,092 psi | 84% | 2372 fps | 96.4% |
| Rottweil R 901 | <<locked>> | 86% | 47,065 psi | 90% | 2277 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 46,180 psi | 88% | 2283 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 96% | 46,064 psi | 88% | 2339 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 98% | 45,614 psi | 87% | 2297 fps | 96.5% |
| Shooters World Match Rifle | <<locked>> | 88% | 45,107 psi | 86% | 2310 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 46,586 psi | 89% | 2310 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 44,860 psi | 86% | 2349 fps | 98.8% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 47,195 psi | 90% | 2316 fps | 97.6% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 45,063 psi | 86% | 2303 fps | 98.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 45,136 psi | 86% | 2205 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 47,195 psi | 90% | 2241 fps | 100% |
| Somchem S321 | <<locked>> | 84% | 46,688 psi | 89% | 2320 fps | 99.8% |
| Somchem S335 | <<locked>> | 88% | 47,094 psi | 90% | 2247 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 46,804 psi | 90% | 2316 fps | 99% |
| Somchem S355 | <<locked>> | 96% | 46,963 psi | 90% | 2343 fps | 99.4% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,276 psi | 73% | 2293 fps | 99.2% |
| Vihtavuori N130 | <<locked>> | 82% | 45,194 psi | 87% | 2185 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 45,121 psi | 86% | 2198 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 44,846 psi | 86% | 2260 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 46,224 psi | 89% | 2277 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 45,252 psi | 87% | 2287 fps | 99.8% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 45,368 psi | 87% | 2333 fps | 97.7% |
| Vihtavuori N530 | <<locked>> | 86% | 46,470 psi | 89% | 2290 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 90% | 44,469 psi | 85% | 2274 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 44,309 psi | 85% | 2343 fps | 97.4% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 46,789 psi | 90% | 2329 fps | 99.4% |
| Winchester 748 | <<locked>> | 86% | 45,179 psi | 87% | 2326 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 88% | 44,280 psi | 85% | 2306 fps | 99.2% |
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% | 39,827 psi | 76% | 2142 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 43,062 psi | 82% | 2231 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 32,256 psi | 62% | 2073 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 38,276 psi | 73% | 2192 fps | 99.7% |
| Accurate 4064 | <<locked>> | 80% | 30,516 psi | 58% | 2060 fps | 99.2% |
| Accurate 4350 | <<locked>> | 94% | 34,490 psi | 66% | 2198 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 36,506 psi | 70% | 2152 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 82% | 33,112 psi | 63% | 2070 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,508 psi | 74% | 2165 fps | 98.7% |
| Alliant AR-Comp | <<locked>> | 80% | 37,028 psi | 71% | 2162 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 44,338 psi | 85% | 2326 fps | 99.2% |
| Alliant Power Pro 2000-MR | 54.4 gr | 82% | 34,940 psi | 67% | 2201 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 30,023 psi | 57% | 2044 fps | 96.1% |
| Alliant Reloder-15 | <<locked>> | 80% | 32,518 psi | 62% | 2093 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 94% | 36,318 psi | 70% | 2211 fps | 95.5% |
| Alliant Reloder-17 | 56.2 gr | 86% | 31,531 psi | 60% | 2139 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 35,302 psi | 68% | 2149 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 29,095 psi | 56% | 2041 fps | 95.9% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,596 psi | 78% | 2162 fps | 99.3% |
| Hodgdon BL-C2 | <<locked>> | 80% | 36,230 psi | 69% | 2178 fps | 98.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 39,871 psi | 76% | 2287 fps | 97.5% |
| Hodgdon H322 | <<locked>> | 80% | 43,700 psi | 84% | 2251 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 36,999 psi | 71% | 2178 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 36,753 psi | 70% | 2162 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 31,024 psi | 59% | 2080 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 32,721 psi | 63% | 2129 fps | 97% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,614 psi | 49% | 1257 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 35,360 psi | 68% | 2123 fps | 97.3% |
| IMR 3031 | <<locked>> | 80% | 35,462 psi | 68% | 2165 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 32,619 psi | 62% | 2054 fps | 95.3% |
| IMR 4831 | <<locked>> | 96% | 35,926 psi | 69% | 2205 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 33,243 psi | 64% | 2119 fps | 96.3% |
| IMR 8208 XBR | <<locked>> | 80% | 38,508 psi | 74% | 2165 fps | 98.7% |
| Lovex D073.5 | <<locked>> | 80% | 42,743 psi | 82% | 2234 fps | 99.7% |
| Lovex D073.6 | <<locked>> | 80% | 34,548 psi | 66% | 2136 fps | 99.2% |
| Lovex S060 | <<locked>> | 80% | 37,420 psi | 72% | 2106 fps | 97.3% |
| Lovex S062 | <<locked>> | 80% | 32,213 psi | 62% | 2060 fps | 97.3% |
| Lovex S065 | <<locked>> | 94% | 40,335 psi | 77% | 2211 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 35,839 psi | 69% | 2116 fps | 98.2% |
| Norma 202 | <<locked>> | 80% | 35,795 psi | 69% | 2129 fps | 99.7% |
| Norma 203B | <<locked>> | 80% | 31,923 psi | 61% | 2087 fps | 95.7% |
| Norma URP | <<locked>> | 94% | 35,824 psi | 69% | 2205 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 31,328 psi | 60% | 2087 fps | 95% |
| Ramshot TAC | <<locked>> | 82% | 40,814 psi | 78% | 2205 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 37,246 psi | 71% | 2178 fps | 97.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 41,597 psi | 80% | 2201 fps | 98.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,744 psi | 49% | 1286 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 43,033 psi | 82% | 2234 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 42,989 psi | 82% | 2254 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 33,315 psi | 64% | 2165 fps | 95.5% |
| ReloadSwiss RS 60 | 52.3 gr | 80% | 27,789 psi | 53% | 2051 fps | 96.5% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 37,246 psi | 71% | 2260 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 41,336 psi | 79% | 2323 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 39,552 psi | 76% | 2159 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 80% | 34,084 psi | 65% | 2077 fps | 97.7% |
| Rottweil R 903 | <<locked>> | 82% | 29,356 psi | 56% | 2037 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 94% | 40,335 psi | 77% | 2211 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 34,548 psi | 66% | 2136 fps | 99.2% |
| Shooters World Precision | <<locked>> | 80% | 32,213 psi | 62% | 2060 fps | 97.3% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 32,793 psi | 63% | 2126 fps | 95.7% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 38,566 psi | 74% | 2178 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 34,983 psi | 67% | 2126 fps | 96.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,652 psi | 72% | 2090 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,777 psi | 59% | 1978 fps | 99.4% |
| Somchem S321 | <<locked>> | 80% | 41,031 psi | 79% | 2231 fps | 99.3% |
| Somchem S335 | <<locked>> | 80% | 36,999 psi | 71% | 2093 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 35,853 psi | 69% | 2136 fps | 96.8% |
| Somchem S355 | <<locked>> | 80% | 28,703 psi | 55% | 2005 fps | 95% |
| Somchem S365 | <<locked>> | 88% | 26,585 psi | 51% | 2024 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 42,728 psi | 82% | 2149 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 37,695 psi | 72% | 2090 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 32,866 psi | 63% | 2073 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 33,721 psi | 65% | 2077 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 80% | 27,108 psi | 52% | 1955 fps | 95.9% |
| Vihtavuori N160 | <<locked>> | 94% | 37,637 psi | 72% | 2205 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 38,232 psi | 73% | 2159 fps | 98.7% |
| Vihtavuori N540 | <<locked>> | 80% | 32,271 psi | 62% | 2064 fps | 99.1% |
| Vihtavuori N550 | <<locked>> | 94% | 36,637 psi | 70% | 2211 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 31,705 psi | 61% | 2057 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 36,999 psi | 71% | 2195 fps | 99.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 34,055 psi | 65% | 2126 fps | 97.1% |
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 81 powders for .375 R Hoelderlin loaded with the .375 | 300gr | Rhino Solid. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,438 fps; across all powders the maximum-charge window runs from 1,407 fps to 2,438 fps. Accurate 4350 gives the best case fill at 100 %, and 81 of the 81 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 1:16.5 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for .375 R Hoelderlin with the .375 | 300gr | Rhino 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.