Load Specifications
Load data in caliber .375 R Hoelderlin with .375 | 250gr | NorthFork Bonded Core bullet and 73 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 Hodgdon LEVERevolution.
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% | 45,556 psi | 87% | 2497 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 46,586 psi | 89% | 2549 fps | 99.9% |
| Accurate 2495 | <<locked>> | 92% | 44,730 psi | 86% | 2543 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 44,324 psi | 85% | 2552 fps | 99.7% |
| Accurate 4064 | <<locked>> | 94% | 44,657 psi | 86% | 2575 fps | 100% |
| ADI AR 2206H | <<locked>> | 88% | 44,396 psi | 85% | 2552 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 94% | 45,426 psi | 87% | 2549 fps | 97.1% |
| ADI Benchmark 8208 | <<locked>> | 88% | 46,891 psi | 90% | 2566 fps | 99% |
| Alliant AR-Comp | <<locked>> | 88% | 45,701 psi | 88% | 2566 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 44,744 psi | 86% | 2605 fps | 98.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 46,427 psi | 89% | 2680 fps | 97.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 46,949 psi | 90% | 2615 fps | 98.9% |
| Alliant Reloder-10x | <<locked>> | 82% | 45,730 psi | 88% | 2507 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 44,918 psi | 86% | 2582 fps | 97.3% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 47,065 psi | 90% | 2703 fps | 98.6% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 46,615 psi | 89% | 2608 fps | 97% |
| Bofors RP3 | <<locked>> | 96% | 46,615 psi | 89% | 2625 fps | 98.9% |
| Hodgdon Benchmark | <<locked>> | 86% | 46,615 psi | 89% | 2516 fps | 99.3% |
| Hodgdon BL-C2 | <<locked>> | 88% | 44,860 psi | 86% | 2585 fps | 99.2% |
| Hodgdon CFE223 | <<locked>> | 86% | 46,267 psi | 89% | 2661 fps | 97.6% |
| Hodgdon H322 | <<locked>> | 82% | 44,266 psi | 85% | 2526 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 45,078 psi | 86% | 2549 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 94% | 45,426 psi | 87% | 2579 fps | 96% |
| Hodgdon H4895 | <<locked>> | 88% | 44,730 psi | 86% | 2566 fps | 98.3% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 37,492 psi | 72% | 2451 fps | 96.1% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 45,672 psi | 87% | 2631 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,127 psi | 65% | 1588 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 46,064 psi | 88% | 2569 fps | 98.4% |
| IMR 3031 | <<locked>> | 90% | 46,238 psi | 89% | 2612 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 44,788 psi | 86% | 2533 fps | 97.3% |
| IMR 4198 | <<locked>> | 82% | 46,528 psi | 89% | 2474 fps | 100% |
| IMR 4895 | <<locked>> | 92% | 45,963 psi | 88% | 2615 fps | 98.1% |
| IMR 8208 XBR | <<locked>> | 88% | 46,891 psi | 90% | 2566 fps | 99% |
| Lovex D073.5 | <<locked>> | 84% | 46,412 psi | 89% | 2552 fps | 99.5% |
| Lovex D073.6 | <<locked>> | 90% | 45,484 psi | 87% | 2582 fps | 99.8% |
| Lovex S060 | <<locked>> | 88% | 45,513 psi | 87% | 2500 fps | 97.9% |
| Lovex S062 | <<locked>> | 94% | 46,963 psi | 90% | 2582 fps | 99.1% |
| Norma 201 | <<locked>> | 90% | 46,354 psi | 89% | 2559 fps | 99% |
| Norma 202 | <<locked>> | 90% | 46,340 psi | 89% | 2569 fps | 100% |
| Norma 203B | <<locked>> | 94% | 47,021 psi | 90% | 2621 fps | 98.3% |
| Ramshot Big Game | <<locked>> | 94% | 46,949 psi | 90% | 2638 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 88% | 46,021 psi | 88% | 2589 fps | 97.9% |
| Ramshot X-Terminator | <<locked>> | 84% | 45,194 psi | 87% | 2516 fps | 97.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,258 psi | 66% | 1624 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 46,673 psi | 89% | 2559 fps | 99.7% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 46,963 psi | 90% | 2684 fps | 97.8% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 47,224 psi | 90% | 2717 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 86% | 44,904 psi | 86% | 2510 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 92% | 46,572 psi | 89% | 2552 fps | 99% |
| Rottweil R 903 | <<locked>> | 98% | 46,340 psi | 89% | 2612 fps | 98.7% |
| Shooters World Match Rifle | <<locked>> | 90% | 45,484 psi | 87% | 2582 fps | 99.8% |
| Shooters World Precision | <<locked>> | 94% | 46,963 psi | 90% | 2582 fps | 99.1% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 46,528 psi | 89% | 2523 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 45,339 psi | 87% | 2618 fps | 97.8% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 46,369 psi | 89% | 2520 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 45,847 psi | 88% | 2575 fps | 97.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 45,687 psi | 88% | 2474 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 45,020 psi | 86% | 2474 fps | 100% |
| Somchem S321 | <<locked>> | 84% | 44,483 psi | 85% | 2546 fps | 98.9% |
| Somchem S335 | <<locked>> | 88% | 44,831 psi | 86% | 2477 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 44,498 psi | 85% | 2539 fps | 97.6% |
| Somchem S355 | <<locked>> | 96% | 44,541 psi | 85% | 2566 fps | 98.2% |
| Somchem S365ᴾ | <<locked>> | 100% | 36,274 psi | 69% | 2493 fps | 97.4% |
| Vihtavuori N130 | <<locked>> | 84% | 45,861 psi | 88% | 2457 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 45,556 psi | 87% | 2470 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 45,310 psi | 87% | 2539 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 46,717 psi | 89% | 2549 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 45,629 psi | 87% | 2556 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 88% | 47,152 psi | 90% | 2566 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 92% | 45,063 psi | 86% | 2546 fps | 99.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 44,599 psi | 85% | 2543 fps | 98% |
| Winchester 748 | <<locked>> | 88% | 45,745 psi | 88% | 2605 fps | 99.5% |
| Winchester StaBALL Match | <<locked>> | 90% | 44,918 psi | 86% | 2579 fps | 98.3% |
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% | 37,768 psi | 72% | 2365 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 40,770 psi | 78% | 2454 fps | 99.5% |
| Accurate 2495 | <<locked>> | 80% | 30,153 psi | 58% | 2270 fps | 99.7% |
| Accurate 2520 | <<locked>> | 80% | 35,998 psi | 69% | 2402 fps | 98.5% |
| Accurate 4064 | <<locked>> | 80% | 28,572 psi | 55% | 2247 fps | 97.5% |
| ADI AR 2206H | <<locked>> | 82% | 36,898 psi | 71% | 2405 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 88% | 37,913 psi | 73% | 2408 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 36,550 psi | 70% | 2375 fps | 97% |
| Alliant AR-Comp | <<locked>> | 80% | 34,954 psi | 67% | 2388 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 41,829 psi | 80% | 2552 fps | 97.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 40,553 psi | 78% | 2566 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 32,039 psi | 61% | 2326 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 43,018 psi | 82% | 2464 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 37,231 psi | 71% | 2434 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 92% | 36,289 psi | 70% | 2484 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 40,814 psi | 78% | 2503 fps | 95.6% |
| Bofors RP3 | <<locked>> | 84% | 31,270 psi | 60% | 2323 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 38,870 psi | 74% | 2379 fps | 98.1% |
| Hodgdon BL-C2 | <<locked>> | 80% | 34,229 psi | 66% | 2382 fps | 97% |
| Hodgdon CFE223 | <<locked>> | 80% | 37,695 psi | 72% | 2493 fps | 95.2% |
| Hodgdon H322 | <<locked>> | 80% | 41,640 psi | 80% | 2484 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 42,061 psi | 81% | 2500 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 92% | 42,554 psi | 82% | 2526 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 34,766 psi | 67% | 2365 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 35,143 psi | 67% | 2402 fps | 95.2% |
| Hodgdon LEVERevolution | 59.2 gr | 82% | 33,054 psi | 63% | 2375 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,237 psi | 48% | 1417 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 33,591 psi | 64% | 2323 fps | 95.1% |
| IMR 3031 | <<locked>> | 80% | 33,301 psi | 64% | 2375 fps | 99.6% |
| IMR 4064 | <<locked>> | 86% | 37,289 psi | 71% | 2388 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 43,903 psi | 84% | 2434 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 35,694 psi | 68% | 2415 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 36,550 psi | 70% | 2375 fps | 97% |
| Lovex D073.5 | <<locked>> | 80% | 40,422 psi | 77% | 2451 fps | 98.7% |
| Lovex D073.6 | <<locked>> | 80% | 32,474 psi | 62% | 2336 fps | 97.6% |
| Lovex S060 | <<locked>> | 80% | 35,766 psi | 69% | 2310 fps | 95.3% |
| Lovex S062 | <<locked>> | 80% | 30,501 psi | 58% | 2254 fps | 95% |
| Norma 201 | <<locked>> | 80% | 33,939 psi | 65% | 2320 fps | 96.3% |
| Norma 202 | <<locked>> | 80% | 33,823 psi | 65% | 2336 fps | 98.5% |
| Norma 203B | <<locked>> | 86% | 36,550 psi | 70% | 2425 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 86% | 36,100 psi | 69% | 2428 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 80% | 35,259 psi | 68% | 2382 fps | 95.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 39,668 psi | 76% | 2415 fps | 96.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,440 psi | 49% | 1453 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 41,060 psi | 79% | 2461 fps | 99.1% |
| ReloadSwiss RS 52 | 61.4 gr | 86% | 38,377 psi | 74% | 2520 fps | 95.5% |
| ReloadSwiss RS 60 | 60.9 gr | 84% | 29,994 psi | 57% | 2333 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 37,521 psi | 72% | 2375 fps | 99% |
| Rottweil R 902 | <<locked>> | 80% | 32,285 psi | 62% | 2274 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 88% | 33,475 psi | 64% | 2365 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 32,474 psi | 62% | 2336 fps | 97.6% |
| Shooters World Precision | <<locked>> | 80% | 30,501 psi | 58% | 2254 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 43,410 psi | 83% | 2470 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 37,579 psi | 72% | 2467 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 43,584 psi | 83% | 2474 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 35,317 psi | 68% | 2372 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 35,781 psi | 69% | 2297 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,095 psi | 56% | 2172 fps | 98.1% |
| Somchem S321 | <<locked>> | 80% | 38,885 psi | 74% | 2444 fps | 97.9% |
| Somchem S335 | <<locked>> | 80% | 35,186 psi | 67% | 2303 fps | 99.3% |
| Somchem S341 | <<locked>> | 82% | 36,274 psi | 69% | 2385 fps | 95.3% |
| Somchem S355 | <<locked>> | 88% | 34,780 psi | 67% | 2375 fps | 95.6% |
| Somchem S365 | <<locked>> | 96% | 31,981 psi | 61% | 2388 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 40,698 psi | 78% | 2375 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 35,737 psi | 68% | 2303 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 80% | 30,850 psi | 59% | 2277 fps | 99.7% |
| Vihtavuori N140 | <<locked>> | 80% | 31,908 psi | 61% | 2277 fps | 98.4% |
| Vihtavuori N150 | <<locked>> | 84% | 29,051 psi | 56% | 2224 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 36,318 psi | 70% | 2365 fps | 97% |
| Vihtavuori N540 | <<locked>> | 80% | 30,647 psi | 59% | 2264 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 36,637 psi | 70% | 2388 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 35,012 psi | 67% | 2402 fps | 97.5% |
| Winchester StaBALL Match | <<locked>> | 82% | 34,476 psi | 66% | 2375 fps | 95.6% |
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 73 powders for .375 R Hoelderlin loaded with the .375 | 250gr | NorthFork Bonded Core. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,717 fps; across all powders the maximum-charge window runs from 1,588 fps to 2,717 fps. Alliant Reloder-17 gives the best case fill at 100 %, and 73 of the 73 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 250.0 gr projectile in 0.375" calls for a 1:6.0 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. ReloadSwiss RS 60, ReloadSwiss RS 52, Hodgdon LEVERevolution rank at the top here: for .375 R Hoelderlin with the .375 | 250gr | NorthFork Bonded Core 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.