Load Specifications
Load data in caliber .375 Hoelderlin with .375 | 270gr | Barnes X S bullet and 84 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, ReloadSwiss RS 52 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>> | 86% | 49,023 psi | 89% | 2395 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 47,326 psi | 86% | 2408 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 49,588 psi | 90% | 2454 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 48,095 psi | 87% | 2461 fps | 100% |
| Accurate 4064 | <<locked>> | 94% | 49,226 psi | 89% | 2487 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 43,497 psi | 79% | 2470 fps | 96.6% |
| ADI AR 2206H | <<locked>> | 88% | 47,529 psi | 86% | 2457 fps | 98.5% |
| ADI AR 2208 | <<locked>> | 94% | 48,051 psi | 87% | 2448 fps | 97.9% |
| ADI Benchmark 8208 | <<locked>> | 88% | 49,734 psi | 90% | 2464 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 88% | 48,950 psi | 89% | 2457 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 48,095 psi | 87% | 2510 fps | 99.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 49,095 psi | 89% | 2582 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 47,239 psi | 86% | 2474 fps | 99.1% |
| Alliant Reloder-10x | <<locked>> | 82% | 49,037 psi | 89% | 2402 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 48,080 psi | 87% | 2490 fps | 98.2% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 44,048 psi | 80% | 2467 fps | 96.6% |
| Alliant Reloder-17 | <<locked>> | 98% | 47,137 psi | 86% | 2559 fps | 98.8% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 49,269 psi | 89% | 2507 fps | 97.8% |
| Bofors RP3 | <<locked>> | 94% | 47,442 psi | 86% | 2487 fps | 99.2% |
| Hodgdon Benchmark | <<locked>> | 86% | 49,255 psi | 89% | 2415 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 88% | 48,095 psi | 87% | 2490 fps | 99.7% |
| Hodgdon CFE223 | <<locked>> | 86% | 49,139 psi | 89% | 2559 fps | 98.4% |
| Hodgdon H322 | <<locked>> | 82% | 47,239 psi | 86% | 2425 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 48,008 psi | 87% | 2448 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 48,704 psi | 88% | 2487 fps | 97% |
| Hodgdon H4895 | <<locked>> | 88% | 47,877 psi | 87% | 2467 fps | 99% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 40,422 psi | 73% | 2372 fps | 97.3% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 48,544 psi | 88% | 2533 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,853 psi | 63% | 1499 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 48,820 psi | 89% | 2467 fps | 99% |
| IMR 3031 | <<locked>> | 90% | 49,647 psi | 90% | 2510 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 47,848 psi | 87% | 2438 fps | 98.1% |
| IMR 4198 | <<locked>> | 82% | 49,110 psi | 89% | 2362 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 41,742 psi | 76% | 2418 fps | 96.1% |
| IMR 4895 | <<locked>> | 92% | 49,182 psi | 89% | 2516 fps | 98.8% |
| IMR 8208 XBR | <<locked>> | 88% | 49,734 psi | 90% | 2464 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 82% | 47,108 psi | 85% | 2415 fps | 99.7% |
| Lovex D073.6 | <<locked>> | 90% | 49,240 psi | 89% | 2490 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 48,254 psi | 88% | 2398 fps | 98.5% |
| Lovex S062 | <<locked>> | 92% | 47,616 psi | 86% | 2444 fps | 99.4% |
| Lovex S065ᴾ | <<locked>> | 100% | 49,356 psi | 90% | 2467 fps | 96.2% |
| Norma 201 | <<locked>> | 88% | 47,079 psi | 85% | 2421 fps | 99.3% |
| Norma 202 | <<locked>> | 90% | 49,661 psi | 90% | 2470 fps | 100% |
| Norma 203B | <<locked>> | 92% | 47,282 psi | 86% | 2480 fps | 98.5% |
| Norma URPᴾ | <<locked>> | 100% | 43,888 psi | 80% | 2464 fps | 96.4% |
| Ramshot Big Game | <<locked>> | 94% | 49,850 psi | 90% | 2539 fps | 98.7% |
| Ramshot TAC | <<locked>> | 86% | 47,195 psi | 86% | 2421 fps | 95.9% |
| Ramshot Wild Boar | <<locked>> | 88% | 48,921 psi | 89% | 2490 fps | 98.6% |
| Ramshot X-Terminator | <<locked>> | 84% | 48,037 psi | 87% | 2421 fps | 98.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,172 psi | 64% | 1535 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 49,588 psi | 90% | 2454 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 46,978 psi | 85% | 2536 fps | 98% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 47,050 psi | 85% | 2569 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 43,250 psi | 78% | 2477 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 86% | 48,994 psi | 89% | 2421 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 47,355 psi | 86% | 2415 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 96% | 47,050 psi | 85% | 2474 fps | 99% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 49,356 psi | 90% | 2467 fps | 96.2% |
| Shooters World Match Rifle | <<locked>> | 90% | 49,240 psi | 89% | 2490 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 47,616 psi | 86% | 2444 fps | 99.4% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 49,356 psi | 90% | 2421 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 48,341 psi | 88% | 2523 fps | 98.5% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 49,298 psi | 89% | 2411 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 48,327 psi | 88% | 2448 fps | 96.8% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 48,675 psi | 88% | 2474 fps | 98.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 48,675 psi | 88% | 2375 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 47,776 psi | 87% | 2372 fps | 100% |
| Somchem S321 | <<locked>> | 84% | 47,703 psi | 87% | 2454 fps | 99.5% |
| Somchem S335 | <<locked>> | 88% | 48,124 psi | 87% | 2379 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 47,282 psi | 86% | 2441 fps | 98.3% |
| Somchem S355 | <<locked>> | 96% | 47,892 psi | 87% | 2474 fps | 98.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 39,247 psi | 71% | 2418 fps | 98.5% |
| Vihtavuori N130 | <<locked>> | 84% | 48,892 psi | 89% | 2356 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 48,428 psi | 88% | 2365 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 48,689 psi | 88% | 2438 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 49,850 psi | 90% | 2451 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 48,921 psi | 89% | 2461 fps | 99.7% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 46,079 psi | 84% | 2461 fps | 96.8% |
| Vihtavuori N530 | <<locked>> | 86% | 47,137 psi | 86% | 2418 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 92% | 48,182 psi | 87% | 2448 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 45,063 psi | 82% | 2467 fps | 96.5% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 47,282 psi | 86% | 2451 fps | 98.7% |
| Winchester 748 | <<locked>> | 88% | 48,834 psi | 89% | 2507 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 90% | 47,950 psi | 87% | 2484 fps | 99% |
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% | 41,205 psi | 75% | 2277 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 44,469 psi | 81% | 2365 fps | 99.9% |
| Accurate 2495 | <<locked>> | 80% | 34,722 psi | 63% | 2215 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 39,740 psi | 72% | 2326 fps | 99.4% |
| Accurate 4064 | <<locked>> | 80% | 32,837 psi | 60% | 2201 fps | 98.9% |
| Accurate 4350 | <<locked>> | 96% | 38,218 psi | 69% | 2375 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 37,710 psi | 68% | 2280 fps | 96.3% |
| ADI AR 2208 | <<locked>> | 86% | 38,290 psi | 69% | 2277 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,508 psi | 72% | 2290 fps | 98% |
| Alliant AR-Comp | <<locked>> | 80% | 38,174 psi | 69% | 2300 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 45,150 psi | 82% | 2461 fps | 98.7% |
| Alliant Power Pro 2000-MR | 59.1 gr | 86% | 40,770 psi | 74% | 2428 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,314 psi | 57% | 2169 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 46,383 psi | 84% | 2362 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 35,955 psi | 65% | 2267 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 96% | 39,349 psi | 71% | 2375 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 88% | 34,795 psi | 63% | 2310 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 38,595 psi | 70% | 2316 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 30,879 psi | 56% | 2172 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 41,582 psi | 75% | 2287 fps | 98.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,420 psi | 68% | 2306 fps | 98.2% |
| Hodgdon CFE223 | <<locked>> | 80% | 40,538 psi | 74% | 2408 fps | 96.5% |
| Hodgdon H322 | <<locked>> | 80% | 44,396 psi | 81% | 2382 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 45,020 psi | 82% | 2402 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 40,669 psi | 74% | 2349 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 37,971 psi | 69% | 2290 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 34,055 psi | 62% | 2241 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,924 psi | 62% | 2254 fps | 96.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,136 psi | 47% | 1339 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,347 psi | 66% | 2247 fps | 96.4% |
| IMR 3031 | <<locked>> | 80% | 36,463 psi | 66% | 2297 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 35,824 psi | 65% | 2218 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 46,340 psi | 84% | 2323 fps | 100% |
| IMR 4831 | <<locked>> | 98% | 39,523 psi | 72% | 2375 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 34,563 psi | 63% | 2247 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 39,508 psi | 72% | 2290 fps | 98% |
| Lovex D073.5 | <<locked>> | 80% | 44,193 psi | 80% | 2369 fps | 99.4% |
| Lovex D073.6 | <<locked>> | 80% | 36,013 psi | 65% | 2267 fps | 98.7% |
| Lovex S060 | <<locked>> | 80% | 38,508 psi | 70% | 2228 fps | 96.5% |
| Lovex S062 | <<locked>> | 80% | 33,837 psi | 61% | 2192 fps | 96.7% |
| Lovex S065 | <<locked>> | 98% | 46,485 psi | 84% | 2421 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 37,420 psi | 68% | 2247 fps | 97.6% |
| Norma 202 | <<locked>> | 80% | 36,941 psi | 67% | 2257 fps | 99.3% |
| Norma 203B | <<locked>> | 82% | 35,288 psi | 64% | 2257 fps | 95.6% |
| Norma URP | <<locked>> | 96% | 38,972 psi | 71% | 2372 fps | 95% |
| Ramshot Big Game | <<locked>> | 84% | 36,767 psi | 67% | 2303 fps | 95.7% |
| Ramshot TAC | <<locked>> | 84% | 44,396 psi | 81% | 2375 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 38,174 psi | 69% | 2303 fps | 96.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 42,525 psi | 77% | 2326 fps | 97.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,353 psi | 48% | 1371 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 44,048 psi | 80% | 2369 fps | 99.6% |
| ReloadSwiss RS 52 | 54.6 gr | 82% | 36,724 psi | 67% | 2343 fps | 95.3% |
| ReloadSwiss RS 60 | 54.1 gr | 80% | 29,225 psi | 53% | 2175 fps | 95.5% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 40,770 psi | 74% | 2431 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 41,539 psi | 75% | 2297 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 80% | 35,781 psi | 65% | 2208 fps | 97.1% |
| Rottweil R 903 | <<locked>> | 84% | 33,011 psi | 60% | 2215 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 98% | 46,485 psi | 84% | 2421 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 36,013 psi | 65% | 2267 fps | 98.7% |
| Shooters World Precision | <<locked>> | 80% | 33,837 psi | 61% | 2192 fps | 96.7% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 46,296 psi | 84% | 2375 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 35,853 psi | 65% | 2290 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 46,557 psi | 84% | 2372 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 42,496 psi | 77% | 2352 fps | 95.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 36,158 psi | 66% | 2251 fps | 95.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,841 psi | 70% | 2215 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,952 psi | 58% | 2100 fps | 99.1% |
| Somchem S321 | <<locked>> | 80% | 42,076 psi | 76% | 2362 fps | 98.8% |
| Somchem S335 | <<locked>> | 80% | 38,348 psi | 70% | 2221 fps | 99.8% |
| Somchem S341 | <<locked>> | 80% | 36,854 psi | 67% | 2257 fps | 95.9% |
| Somchem S355 | <<locked>> | 82% | 32,111 psi | 58% | 2175 fps | 95% |
| Somchem S365 | <<locked>> | 92% | 31,328 psi | 57% | 2238 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 43,743 psi | 79% | 2280 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 38,667 psi | 70% | 2218 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,258 psi | 62% | 2205 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 34,911 psi | 63% | 2201 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 80% | 28,660 psi | 52% | 2080 fps | 95.3% |
| Vihtavuori N160 | <<locked>> | 96% | 40,944 psi | 74% | 2369 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 39,276 psi | 71% | 2283 fps | 98% |
| Vihtavuori N540 | <<locked>> | 80% | 33,692 psi | 61% | 2195 fps | 98.6% |
| Vihtavuori N550 | <<locked>> | 96% | 39,914 psi | 72% | 2375 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 34,853 psi | 63% | 2221 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 38,043 psi | 69% | 2323 fps | 98.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 35,172 psi | 64% | 2251 fps | 96.2% |
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 84 powders for .375 Hoelderlin loaded with the .375 | 270gr | Barnes X S. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,582 fps; across all powders the maximum-charge window runs from 1,499 fps to 2,582 fps. Accurate 4350 gives the best case fill at 100 %, and 84 of the 84 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 63–90 %, leaving at least 10 % headroom. The 270.0 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, ReloadSwiss RS 52, Alliant Power Pro 2000-MR rank at the top here: for .375 Hoelderlin with the .375 | 270gr | Barnes X S 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.