Load Specifications
Load data in caliber .375 R Hoelderlin with .375 | 270gr | Nosler CT FailSafe bullet and 77 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 52 and ReloadSwiss RS 60.
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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Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 86% | 44,686 psi | 86% | 2352 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 45,730 psi | 88% | 2405 fps | 99.9% |
| Accurate 2495 | <<locked>> | 94% | 46,731 psi | 90% | 2441 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 44,614 psi | 85% | 2438 fps | 99.8% |
| Accurate 2520 | <<locked>> | 88% | 44,614 psi | 85% | 2438 fps | 99.8% |
| Accurate 4064 | <<locked>> | 96% | 46,383 psi | 89% | 2470 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 46,441 psi | 89% | 2454 fps | 98.3% |
| ADI AR 2208 | <<locked>> | 94% | 44,512 psi | 85% | 2405 fps | 97.2% |
| ADI Benchmark 8208 | <<locked>> | 88% | 46,006 psi | 88% | 2421 fps | 99.1% |
| Alliant AR-Comp | <<locked>> | 88% | 44,541 psi | 85% | 2415 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 46,833 psi | 90% | 2507 fps | 98.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 45,353 psi | 87% | 2526 fps | 97.1% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 46,891 psi | 90% | 2467 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 45,788 psi | 88% | 2464 fps | 98.9% |
| Alliant Reloder-10x | <<locked>> | 82% | 44,991 psi | 86% | 2362 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 46,920 psi | 90% | 2484 fps | 97.9% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 46,108 psi | 88% | 2552 fps | 98.6% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 47,123 psi | 90% | 2346 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 45,658 psi | 87% | 2461 fps | 97.1% |
| Bofors RP3 | <<locked>> | 96% | 45,513 psi | 87% | 2474 fps | 99% |
| Hodgdon Benchmark | <<locked>> | 86% | 45,716 psi | 88% | 2372 fps | 99.4% |
| Hodgdon BL-C2 | <<locked>> | 90% | 46,876 psi | 90% | 2487 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 86% | 45,368 psi | 87% | 2510 fps | 97.7% |
| Hodgdon H322 | <<locked>> | 86% | 45,905 psi | 88% | 2421 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 46,818 psi | 90% | 2444 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 44,324 psi | 85% | 2431 fps | 96% |
| Hodgdon H4895 | <<locked>> | 90% | 46,717 psi | 89% | 2464 fps | 98.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 36,666 psi | 70% | 2313 fps | 96.1% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 44,599 psi | 85% | 2480 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,011 psi | 65% | 1490 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 46,992 psi | 90% | 2451 fps | 98.7% |
| IMR 3031 | <<locked>> | 94% | 46,731 psi | 90% | 2484 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 45,919 psi | 88% | 2418 fps | 97.7% |
| IMR 4198 | <<locked>> | 82% | 45,847 psi | 88% | 2329 fps | 100% |
| IMR 4895 | <<locked>> | 92% | 45,078 psi | 86% | 2467 fps | 98.2% |
| IMR 8208 XBR | <<locked>> | 88% | 46,006 psi | 88% | 2421 fps | 99.1% |
| Lovex D073.5 | <<locked>> | 84% | 45,469 psi | 87% | 2408 fps | 99.5% |
| Lovex D073.6 | <<locked>> | 90% | 44,353 psi | 85% | 2434 fps | 99.8% |
| Lovex S060 | <<locked>> | 88% | 44,686 psi | 86% | 2356 fps | 97.9% |
| Lovex S062 | <<locked>> | 94% | 45,992 psi | 88% | 2434 fps | 99.2% |
| Norma 201 | <<locked>> | 90% | 45,513 psi | 87% | 2411 fps | 99.1% |
| Norma 202 | <<locked>> | 90% | 45,542 psi | 87% | 2425 fps | 100% |
| Norma 203B | <<locked>> | 94% | 46,079 psi | 88% | 2474 fps | 98.3% |
| Ramshot Big Game | <<locked>> | 94% | 45,919 psi | 88% | 2487 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 88% | 45,165 psi | 87% | 2444 fps | 98% |
| Ramshot X-Terminator | <<locked>> | 86% | 47,239 psi | 90% | 2418 fps | 98.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,185 psi | 65% | 1526 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 45,818 psi | 88% | 2411 fps | 99.7% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 45,876 psi | 88% | 2533 fps | 97.8% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 46,050 psi | 88% | 2562 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 88% | 46,688 psi | 89% | 2408 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 45,759 psi | 88% | 2408 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 98% | 45,223 psi | 87% | 2461 fps | 98.7% |
| Shooters World Match Rifle | <<locked>> | 90% | 44,353 psi | 85% | 2434 fps | 99.8% |
| Shooters World Precision | <<locked>> | 94% | 45,992 psi | 88% | 2434 fps | 99.2% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 45,600 psi | 87% | 2375 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 44,382 psi | 85% | 2470 fps | 97.8% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 45,672 psi | 87% | 2375 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 47,094 psi | 90% | 2441 fps | 96.4% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 44,918 psi | 86% | 2428 fps | 98% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 45,049 psi | 86% | 2336 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 46,876 psi | 90% | 2372 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 46,557 psi | 89% | 2451 fps | 99.4% |
| Somchem S335 | <<locked>> | 90% | 46,862 psi | 90% | 2379 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 46,615 psi | 89% | 2444 fps | 98.2% |
| Somchem S355 | <<locked>> | 98% | 46,340 psi | 89% | 2464 fps | 98.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 35,389 psi | 68% | 2352 fps | 97.4% |
| Vihtavuori N130 | <<locked>> | 84% | 45,179 psi | 87% | 2320 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 44,875 psi | 86% | 2333 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 47,094 psi | 90% | 2434 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 45,672 psi | 87% | 2405 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 44,585 psi | 85% | 2411 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 88% | 46,180 psi | 88% | 2418 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 94% | 46,891 psi | 90% | 2441 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 43,627 psi | 84% | 2398 fps | 98% |
| Winchester 748 | <<locked>> | 86% | 45,339 psi | 87% | 2467 fps | 99.6% |
| Winchester StaBALL Match | <<locked>> | 84% | 45,208 psi | 87% | 2454 fps | 98.6% |
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% | 37,014 psi | 71% | 2228 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 39,929 psi | 76% | 2313 fps | 99.5% |
| Accurate 2495 | <<locked>> | 80% | 29,428 psi | 56% | 2142 fps | 99.7% |
| Accurate 2520 | <<locked>> | 80% | 33,808 psi | 65% | 2247 fps | 98.3% |
| Accurate 2520 | <<locked>> | 80% | 33,808 psi | 65% | 2247 fps | 98.3% |
| Accurate 4064 | <<locked>> | 80% | 27,905 psi | 53% | 2123 fps | 97.6% |
| ADI AR 2206H | <<locked>> | 80% | 34,069 psi | 65% | 2224 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 88% | 37,159 psi | 71% | 2270 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 36,027 psi | 69% | 2241 fps | 97.1% |
| Alliant AR-Comp | <<locked>> | 80% | 34,243 psi | 66% | 2251 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 41,205 psi | 79% | 2408 fps | 97.9% |
| Alliant Power Pro 2000-MR | 59.6 gr | 88% | 39,827 psi | 76% | 2421 fps | 95.4% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 34,403 psi | 66% | 2238 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 31,401 psi | 60% | 2195 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 42,308 psi | 81% | 2323 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 36,463 psi | 70% | 2297 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 92% | 35,534 psi | 68% | 2343 fps | 95.6% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 44,135 psi | 85% | 2303 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 39,943 psi | 77% | 2359 fps | 95.6% |
| Bofors RP3 | <<locked>> | 84% | 30,589 psi | 59% | 2192 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 38,247 psi | 73% | 2244 fps | 98.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 33,562 psi | 64% | 2247 fps | 97.1% |
| Hodgdon CFE223 | <<locked>> | 80% | 36,912 psi | 71% | 2349 fps | 95.3% |
| Hodgdon H322 | <<locked>> | 80% | 37,913 psi | 73% | 2290 fps | 99.8% |
| Hodgdon H335 | <<locked>> | 80% | 43,700 psi | 84% | 2398 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 92% | 41,713 psi | 80% | 2385 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 34,272 psi | 66% | 2234 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 34,548 psi | 66% | 2267 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 32,706 psi | 63% | 2247 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,193 psi | 48% | 1329 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 32,605 psi | 62% | 2182 fps | 95.1% |
| IMR 3031 | <<locked>> | 80% | 29,994 psi | 57% | 2182 fps | 99.3% |
| IMR 4064 | <<locked>> | 88% | 36,158 psi | 69% | 2244 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 43,265 psi | 83% | 2293 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 34,940 psi | 67% | 2280 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 36,027 psi | 69% | 2241 fps | 97.1% |
| Lovex D073.5 | <<locked>> | 80% | 39,755 psi | 76% | 2313 fps | 98.8% |
| Lovex D073.6 | <<locked>> | 80% | 31,807 psi | 61% | 2205 fps | 97.7% |
| Lovex S060 | <<locked>> | 80% | 35,302 psi | 68% | 2182 fps | 95.5% |
| Lovex S062 | <<locked>> | 80% | 29,979 psi | 57% | 2126 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 33,315 psi | 64% | 2185 fps | 96.4% |
| Norma 202 | <<locked>> | 80% | 33,156 psi | 64% | 2205 fps | 98.6% |
| Norma 203B | <<locked>> | 84% | 33,533 psi | 64% | 2241 fps | 95% |
| Ramshot Big Game | <<locked>> | 86% | 35,389 psi | 68% | 2293 fps | 95.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 34,534 psi | 66% | 2244 fps | 95.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 39,059 psi | 75% | 2280 fps | 96.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,440 psi | 49% | 1365 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 40,248 psi | 77% | 2320 fps | 99.1% |
| ReloadSwiss RS 52 | 56.4 gr | 86% | 37,478 psi | 72% | 2375 fps | 95.6% |
| ReloadSwiss RS 60 | 56 gr | 84% | 29,457 psi | 56% | 2201 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 36,927 psi | 71% | 2241 fps | 99.1% |
| Rottweil R 902 | <<locked>> | 80% | 31,705 psi | 61% | 2146 fps | 95.8% |
| Rottweil R 903 | <<locked>> | 88% | 32,663 psi | 63% | 2231 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 31,807 psi | 61% | 2205 fps | 97.7% |
| Shooters World Precision | <<locked>> | 80% | 29,979 psi | 57% | 2126 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 42,714 psi | 82% | 2329 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 36,825 psi | 71% | 2329 fps | 95.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 42,931 psi | 82% | 2333 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 43,932 psi | 84% | 2392 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 34,693 psi | 66% | 2238 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 35,259 psi | 68% | 2169 fps | 98.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,631 psi | 55% | 2047 fps | 98.2% |
| Somchem S321 | <<locked>> | 80% | 38,116 psi | 73% | 2306 fps | 98% |
| Somchem S335 | <<locked>> | 80% | 34,519 psi | 66% | 2172 fps | 99.3% |
| Somchem S341 | <<locked>> | 82% | 35,607 psi | 68% | 2251 fps | 95.4% |
| Somchem S355 | <<locked>> | 86% | 32,053 psi | 61% | 2198 fps | 95% |
| Somchem S365 | <<locked>> | 96% | 31,314 psi | 60% | 2257 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 40,059 psi | 77% | 2241 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 35,186 psi | 67% | 2172 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 30,255 psi | 58% | 2149 fps | 99.7% |
| Vihtavuori N140 | <<locked>> | 80% | 31,328 psi | 60% | 2149 fps | 98.4% |
| Vihtavuori N150 | <<locked>> | 84% | 28,514 psi | 55% | 2100 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 35,679 psi | 68% | 2234 fps | 97.1% |
| Vihtavuori N540 | <<locked>> | 80% | 30,139 psi | 58% | 2139 fps | 97.6% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 35,926 psi | 69% | 2257 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 36,941 psi | 71% | 2320 fps | 98.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,160 psi | 75% | 2349 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 77 powders for .375 R Hoelderlin loaded with the .375 | 270gr | Nosler CT FailSafe. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,562 fps; across all powders the maximum-charge window runs from 1,490 fps to 2,562 fps. Alliant Reloder-17 gives the best case fill at 100 %, and 77 of the 77 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 270.0 gr projectile in 0.375" calls for a 1:16.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-17, Hodgdon Hybrid 100V, Hodgdon TrailBoss 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 52, ReloadSwiss RS 60 rank at the top here: for .375 R Hoelderlin with the .375 | 270gr | Nosler CT FailSafe 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.