Load Specifications
Load data in caliber .375 Hoelderlin with .375 | 250gr | NorthFork Bonded Core bullet and 79 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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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>> | 88% | 48,370 psi | 88% | 2536 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 49,719 psi | 90% | 2595 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 47,863 psi | 87% | 2589 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 47,543 psi | 86% | 2602 fps | 99.9% |
| Accurate 4064 | <<locked>> | 96% | 47,485 psi | 86% | 2618 fps | 100% |
| Accurate LT-30 | <<locked>> | 82% | 49,197 psi | 89% | 2490 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 49,588 psi | 90% | 2507 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 90% | 47,297 psi | 86% | 2602 fps | 98.2% |
| ADI AR 2208 | <<locked>> | 96% | 48,211 psi | 87% | 2595 fps | 97.7% |
| ADI AR 2219 | <<locked>> | 82% | 48,428 psi | 88% | 2592 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 46,891 psi | 85% | 2566 fps | 99% |
| Alliant AR-Comp | <<locked>> | 90% | 48,704 psi | 88% | 2605 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 47,819 psi | 87% | 2657 fps | 98.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 49,414 psi | 90% | 2736 fps | 97.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 46,949 psi | 85% | 2615 fps | 98.9% |
| Alliant Reloder-10x | <<locked>> | 84% | 48,588 psi | 88% | 2549 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 47,863 psi | 87% | 2635 fps | 97.9% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 47,065 psi | 85% | 2703 fps | 98.6% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 47,877 psi | 87% | 2487 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 49,603 psi | 90% | 2657 fps | 97.6% |
| Bofors RP3 | <<locked>> | 96% | 46,615 psi | 85% | 2625 fps | 98.9% |
| Hodgdon Benchmark | <<locked>> | 88% | 49,356 psi | 90% | 2559 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 90% | 48,080 psi | 87% | 2638 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 88% | 49,516 psi | 90% | 2717 fps | 98.2% |
| Hodgdon H322 | <<locked>> | 84% | 47,311 psi | 86% | 2575 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 48,225 psi | 88% | 2598 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 48,501 psi | 88% | 2628 fps | 96.7% |
| Hodgdon H4895 | <<locked>> | 90% | 47,601 psi | 86% | 2612 fps | 98.7% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 37,492 psi | 68% | 2451 fps | 96.1% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 48,834 psi | 89% | 2684 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,127 psi | 62% | 1588 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 49,081 psi | 89% | 2618 fps | 98.8% |
| IMR 3031 | <<locked>> | 92% | 49,501 psi | 90% | 2657 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 47,732 psi | 87% | 2582 fps | 97.9% |
| IMR 4198 | <<locked>> | 84% | 49,487 psi | 90% | 2516 fps | 100% |
| IMR 4895 | <<locked>> | 94% | 49,008 psi | 89% | 2664 fps | 98.6% |
| IMR 8208 XBR | <<locked>> | 88% | 46,891 psi | 85% | 2566 fps | 99% |
| Lovex D073.5 | <<locked>> | 86% | 49,690 psi | 90% | 2605 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 92% | 48,573 psi | 88% | 2628 fps | 99.9% |
| Lovex S060 | <<locked>> | 90% | 48,196 psi | 87% | 2543 fps | 98.3% |
| Lovex S062 | <<locked>> | 94% | 46,963 psi | 85% | 2582 fps | 99.1% |
| Norma 201 | <<locked>> | 92% | 49,168 psi | 89% | 2602 fps | 99.4% |
| Norma 202 | <<locked>> | 92% | 49,443 psi | 90% | 2615 fps | 100% |
| Norma 203B | <<locked>> | 94% | 47,021 psi | 85% | 2621 fps | 98.3% |
| Ramshot Big Game | <<locked>> | 94% | 46,949 psi | 85% | 2638 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 90% | 49,226 psi | 89% | 2641 fps | 98.5% |
| Ramshot X-Terminator | <<locked>> | 86% | 48,269 psi | 88% | 2569 fps | 98.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,258 psi | 62% | 1624 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 49,763 psi | 90% | 2605 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 46,963 psi | 85% | 2684 fps | 97.8% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 47,224 psi | 86% | 2717 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 88% | 47,601 psi | 86% | 2556 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 49,617 psi | 90% | 2602 fps | 99.4% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 49,501 psi | 90% | 2661 fps | 99.1% |
| Shooters World Match Rifle | <<locked>> | 92% | 48,573 psi | 88% | 2628 fps | 99.9% |
| Shooters World Precision | <<locked>> | 94% | 46,963 psi | 85% | 2582 fps | 99.1% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 49,821 psi | 90% | 2572 fps | 99.1% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 49,008 psi | 89% | 2602 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 48,530 psi | 88% | 2671 fps | 98.4% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 49,371 psi | 90% | 2562 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 48,182 psi | 87% | 2592 fps | 96.4% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 48,834 psi | 89% | 2625 fps | 98.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 48,588 psi | 88% | 2520 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 47,892 psi | 87% | 2516 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 47,587 psi | 86% | 2598 fps | 99.3% |
| Somchem S335 | <<locked>> | 90% | 47,718 psi | 87% | 2520 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 47,645 psi | 86% | 2592 fps | 98.1% |
| Somchem S355 | <<locked>> | 98% | 47,471 psi | 86% | 2615 fps | 98.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 36,274 psi | 66% | 2493 fps | 97.4% |
| Vihtavuori N130 | <<locked>> | 86% | 48,704 psi | 88% | 2500 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 48,399 psi | 88% | 2513 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 48,211 psi | 87% | 2582 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 49,821 psi | 90% | 2595 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 48,820 psi | 89% | 2602 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 88% | 47,152 psi | 86% | 2566 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 94% | 48,008 psi | 87% | 2592 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 44,599 psi | 81% | 2543 fps | 98% |
| Winchester 748 | <<locked>> | 90% | 48,849 psi | 89% | 2654 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 92% | 48,095 psi | 87% | 2631 fps | 98.8% |
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 | 69% | 2365 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 40,770 psi | 74% | 2454 fps | 99.5% |
| Accurate 2495 | <<locked>> | 80% | 30,153 psi | 55% | 2270 fps | 99.7% |
| Accurate 2520 | <<locked>> | 80% | 35,998 psi | 65% | 2402 fps | 98.5% |
| Accurate 4064 | <<locked>> | 80% | 28,572 psi | 52% | 2247 fps | 97.5% |
| Accurate LT-30 | <<locked>> | 80% | 46,383 psi | 84% | 2448 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 46,760 psi | 85% | 2464 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 82% | 36,898 psi | 67% | 2405 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 88% | 37,913 psi | 69% | 2408 fps | 95.1% |
| ADI AR 2219 | <<locked>> | 80% | 45,339 psi | 82% | 2546 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 36,550 psi | 66% | 2375 fps | 97% |
| Alliant AR-Comp | <<locked>> | 80% | 34,954 psi | 63% | 2388 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 41,829 psi | 76% | 2552 fps | 97.8% |
| Alliant Power Pro 2000-MR | 64.8 gr | 88% | 40,553 psi | 74% | 2566 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 32,039 psi | 58% | 2326 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 43,018 psi | 78% | 2464 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 37,231 psi | 68% | 2434 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 92% | 36,289 psi | 66% | 2484 fps | 95.6% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 44,889 psi | 81% | 2441 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 40,814 psi | 74% | 2503 fps | 95.6% |
| Bofors RP3 | <<locked>> | 84% | 31,270 psi | 57% | 2323 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 38,870 psi | 71% | 2379 fps | 98.1% |
| Hodgdon BL-C2 | <<locked>> | 80% | 34,229 psi | 62% | 2382 fps | 97% |
| Hodgdon CFE223 | <<locked>> | 80% | 37,695 psi | 68% | 2493 fps | 95.2% |
| Hodgdon H322 | <<locked>> | 80% | 41,640 psi | 76% | 2484 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 42,061 psi | 76% | 2500 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 92% | 42,554 psi | 77% | 2526 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 34,766 psi | 63% | 2365 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 35,143 psi | 64% | 2402 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 33,054 psi | 60% | 2375 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,237 psi | 46% | 1417 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 33,591 psi | 61% | 2323 fps | 95.1% |
| IMR 3031 | <<locked>> | 80% | 33,301 psi | 60% | 2375 fps | 99.6% |
| IMR 4064 | <<locked>> | 86% | 37,289 psi | 68% | 2388 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 43,903 psi | 80% | 2434 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 35,694 psi | 65% | 2415 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 36,550 psi | 66% | 2375 fps | 97% |
| Lovex D073.5 | <<locked>> | 80% | 40,422 psi | 73% | 2451 fps | 98.7% |
| Lovex D073.6 | <<locked>> | 80% | 32,474 psi | 59% | 2336 fps | 97.6% |
| Lovex S060 | <<locked>> | 80% | 35,766 psi | 65% | 2310 fps | 95.3% |
| Lovex S062 | <<locked>> | 80% | 30,501 psi | 55% | 2254 fps | 95% |
| Norma 201 | <<locked>> | 80% | 33,939 psi | 62% | 2320 fps | 96.3% |
| Norma 202 | <<locked>> | 80% | 33,823 psi | 61% | 2336 fps | 98.5% |
| Norma 203B | <<locked>> | 86% | 36,550 psi | 66% | 2425 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 86% | 36,100 psi | 66% | 2428 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 80% | 35,259 psi | 64% | 2382 fps | 95.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 39,668 psi | 72% | 2415 fps | 96.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,440 psi | 46% | 1453 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 41,060 psi | 75% | 2461 fps | 99.1% |
| ReloadSwiss RS 52 | 61.4 gr | 86% | 38,377 psi | 70% | 2520 fps | 95.5% |
| ReloadSwiss RS 60 | 60.9 gr | 84% | 29,994 psi | 54% | 2333 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 37,521 psi | 68% | 2375 fps | 99% |
| Rottweil R 902 | <<locked>> | 80% | 32,285 psi | 59% | 2274 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 88% | 33,475 psi | 61% | 2365 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 32,474 psi | 59% | 2336 fps | 97.6% |
| Shooters World Precision | <<locked>> | 80% | 30,501 psi | 55% | 2254 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 43,410 psi | 79% | 2470 fps | 98.2% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 45,818 psi | 83% | 2552 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 37,579 psi | 68% | 2467 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 43,584 psi | 79% | 2474 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 44,962 psi | 82% | 2539 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 35,317 psi | 64% | 2372 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 35,781 psi | 65% | 2297 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,095 psi | 53% | 2172 fps | 98.1% |
| Somchem S321 | <<locked>> | 80% | 38,885 psi | 71% | 2444 fps | 97.9% |
| Somchem S335 | <<locked>> | 80% | 35,186 psi | 64% | 2303 fps | 99.3% |
| Somchem S341 | <<locked>> | 82% | 36,274 psi | 66% | 2385 fps | 95.3% |
| Somchem S355 | <<locked>> | 88% | 34,780 psi | 63% | 2375 fps | 95.6% |
| Somchem S365 | <<locked>> | 96% | 31,981 psi | 58% | 2388 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 40,698 psi | 74% | 2375 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 35,737 psi | 65% | 2303 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 80% | 30,850 psi | 56% | 2277 fps | 99.7% |
| Vihtavuori N140 | <<locked>> | 80% | 31,908 psi | 58% | 2277 fps | 98.4% |
| Vihtavuori N150 | <<locked>> | 84% | 29,051 psi | 53% | 2224 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 36,318 psi | 66% | 2365 fps | 97% |
| Vihtavuori N540 | <<locked>> | 80% | 30,647 psi | 56% | 2264 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 36,637 psi | 66% | 2388 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 35,012 psi | 64% | 2402 fps | 97.5% |
| Winchester StaBALL Match | <<locked>> | 82% | 34,476 psi | 63% | 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 79 powders for .375 Hoelderlin loaded with the .375 | 250gr | NorthFork Bonded Core. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,736 fps; across all powders the maximum-charge window runs from 1,588 fps to 2,736 fps. Alliant Reloder-17 gives the best case fill at 100 %, and 79 of the 79 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 62–90 %, 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 52, ReloadSwiss RS 60 rank at the top here: for .375 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.