Load Specifications
Load data in caliber .375 R Hoelderlin with .374 | 250gr | Frontier BTSP bullet and 74 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon LEVERevolution, ReloadSwiss RS 60 and IMR 4895.
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>> | 88% | 45,716 psi | 88% | 2477 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 46,847 psi | 90% | 2530 fps | 99.8% |
| Accurate 2495 | <<locked>> | 94% | 44,309 psi | 85% | 2516 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 44,353 psi | 85% | 2530 fps | 99.5% |
| Accurate 4064 | <<locked>> | 98% | 47,108 psi | 90% | 2592 fps | 100% |
| Accurate LT-30 | <<locked>> | 82% | 47,065 psi | 90% | 2431 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 44,730 psi | 86% | 2530 fps | 97.3% |
| ADI AR 2208 | <<locked>> | 96% | 45,455 psi | 87% | 2520 fps | 96.7% |
| ADI AR 2219 | <<locked>> | 82% | 45,803 psi | 88% | 2530 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 44,454 psi | 85% | 2500 fps | 98.4% |
| Alliant AR-Comp | <<locked>> | 90% | 45,527 psi | 87% | 2543 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 44,962 psi | 86% | 2582 fps | 98.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 46,659 psi | 89% | 2651 fps | 96.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 46,586 psi | 89% | 2585 fps | 98.5% |
| Alliant Reloder-10x | <<locked>> | 84% | 46,050 psi | 88% | 2487 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 44,962 psi | 86% | 2556 fps | 96.9% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 44,295 psi | 85% | 2618 fps | 97.5% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 45,498 psi | 87% | 2428 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 46,673 psi | 89% | 2579 fps | 96.5% |
| Bofors RP3 | <<locked>> | 98% | 46,427 psi | 89% | 2595 fps | 98.6% |
| Hodgdon Benchmark | <<locked>> | 88% | 46,978 psi | 90% | 2497 fps | 99.1% |
| Hodgdon BL-C2 | <<locked>> | 90% | 44,947 psi | 86% | 2562 fps | 99% |
| Hodgdon CFE223 | <<locked>> | 88% | 46,412 psi | 89% | 2635 fps | 97.2% |
| Hodgdon H322 | <<locked>> | 84% | 44,657 psi | 86% | 2510 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 45,310 psi | 87% | 2530 fps | 99.8% |
| Hodgdon H4895 | <<locked>> | 90% | 44,976 psi | 86% | 2543 fps | 97.9% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 45,803 psi | 88% | 2605 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,852 psi | 65% | 1558 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 46,398 psi | 89% | 2546 fps | 98.1% |
| IMR 3031 | <<locked>> | 92% | 46,195 psi | 88% | 2589 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 45,034 psi | 86% | 2507 fps | 96.9% |
| IMR 4198 | <<locked>> | 84% | 47,021 psi | 90% | 2457 fps | 100% |
| IMR 4895 | <<locked>> | 94% | 45,977 psi | 88% | 2589 fps | 97.7% |
| IMR 8208 XBR | <<locked>> | 88% | 44,454 psi | 85% | 2500 fps | 98.4% |
| Lovex D073.5 | <<locked>> | 86% | 46,543 psi | 89% | 2530 fps | 99.3% |
| Lovex D073.6 | <<locked>> | 92% | 45,411 psi | 87% | 2559 fps | 99.6% |
| Lovex S060 | <<locked>> | 90% | 45,905 psi | 88% | 2477 fps | 97.5% |
| Lovex S062 | <<locked>> | 96% | 46,992 psi | 90% | 2556 fps | 98.9% |
| Norma 201 | <<locked>> | 92% | 46,499 psi | 89% | 2533 fps | 98.8% |
| Norma 202 | <<locked>> | 92% | 46,427 psi | 89% | 2546 fps | 99.9% |
| Norma 203B | <<locked>> | 96% | 46,963 psi | 90% | 2592 fps | 97.8% |
| Ramshot Big Game | <<locked>> | 96% | 47,224 psi | 90% | 2612 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 90% | 46,267 psi | 89% | 2566 fps | 97.6% |
| Ramshot X-Terminator | <<locked>> | 86% | 45,513 psi | 87% | 2493 fps | 97.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,968 psi | 65% | 1598 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 47,181 psi | 90% | 2539 fps | 99.6% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 46,949 psi | 90% | 2654 fps | 97.3% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 44,295 psi | 85% | 2631 fps | 99.4% |
| Rottweil R 901 | <<locked>> | 88% | 45,020 psi | 86% | 2487 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 94% | 46,746 psi | 90% | 2530 fps | 98.8% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 46,093 psi | 88% | 2582 fps | 98.3% |
| Shooters World Match Rifle | <<locked>> | 92% | 45,411 psi | 87% | 2559 fps | 99.6% |
| Shooters World Precision | <<locked>> | 96% | 46,992 psi | 90% | 2556 fps | 98.9% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 47,007 psi | 90% | 2500 fps | 98.4% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 46,195 psi | 88% | 2536 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 45,527 psi | 87% | 2592 fps | 97.3% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 46,775 psi | 90% | 2500 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 45,847 psi | 88% | 2546 fps | 97.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 46,180 psi | 88% | 2457 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 45,121 psi | 86% | 2451 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 44,715 psi | 86% | 2526 fps | 98.7% |
| Somchem S335 | <<locked>> | 90% | 45,078 psi | 86% | 2457 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 44,585 psi | 85% | 2513 fps | 97.1% |
| Somchem S355 | <<locked>> | 98% | 44,483 psi | 85% | 2539 fps | 97.8% |
| Vihtavuori N130 | <<locked>> | 86% | 46,238 psi | 89% | 2441 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 45,919 psi | 88% | 2454 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 44,918 psi | 86% | 2513 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 46,760 psi | 90% | 2526 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 45,600 psi | 87% | 2530 fps | 99% |
| Vihtavuori N530 | <<locked>> | 88% | 44,512 psi | 85% | 2493 fps | 98.4% |
| Vihtavuori N540 | <<locked>> | 94% | 45,078 psi | 86% | 2523 fps | 99.8% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 41,901 psi | 80% | 2461 fps | 96.8% |
| Winchester 748 | <<locked>> | 90% | 45,818 psi | 88% | 2582 fps | 99.3% |
| Winchester StaBALL Match | <<locked>> | 92% | 44,962 psi | 86% | 2552 fps | 97.9% |
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% | 35,621 psi | 68% | 2303 fps | 99.9% |
| Accurate 2460 | <<locked>> | 80% | 38,348 psi | 73% | 2385 fps | 98.9% |
| Accurate 2495 | <<locked>> | 80% | 28,036 psi | 54% | 2205 fps | 99.1% |
| Accurate 2520 | <<locked>> | 80% | 33,692 psi | 65% | 2329 fps | 97.6% |
| Accurate 4064 | <<locked>> | 80% | 26,556 psi | 51% | 2178 fps | 96.3% |
| Accurate LT-30 | <<locked>> | 80% | 44,164 psi | 85% | 2388 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 37,072 psi | 71% | 2385 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 92% | 40,306 psi | 77% | 2428 fps | 95.3% |
| ADI AR 2219 | <<locked>> | 80% | 42,888 psi | 82% | 2480 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 80% | 34,650 psi | 66% | 2310 fps | 95.9% |
| Alliant AR-Comp | <<locked>> | 80% | 32,822 psi | 63% | 2326 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 39,465 psi | 76% | 2480 fps | 96.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 43,642 psi | 84% | 2595 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 34,040 psi | 65% | 2349 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 40,654 psi | 78% | 2402 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 39,668 psi | 76% | 2461 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 96% | 38,754 psi | 74% | 2507 fps | 95.8% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 42,656 psi | 82% | 2382 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 40,915 psi | 78% | 2477 fps | 95% |
| Bofors RP3 | <<locked>> | 88% | 33,214 psi | 64% | 2349 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 36,985 psi | 71% | 2313 fps | 97.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 32,097 psi | 61% | 2313 fps | 95.8% |
| Hodgdon CFE223 | <<locked>> | 84% | 40,640 psi | 78% | 2526 fps | 95.6% |
| Hodgdon H322 | <<locked>> | 80% | 39,160 psi | 75% | 2418 fps | 99.7% |
| Hodgdon H335 | <<locked>> | 80% | 39,566 psi | 76% | 2431 fps | 99.3% |
| Hodgdon H4895 | <<locked>> | 82% | 35,012 psi | 67% | 2349 fps | 95.3% |
| Hodgdon LEVERevolution | 58.6 gr | 86% | 35,462 psi | 68% | 2405 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,077 psi | 48% | 1391 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 36,071 psi | 69% | 2352 fps | 95.5% |
| IMR 3031 | <<locked>> | 80% | 31,285 psi | 60% | 2310 fps | 99.1% |
| IMR 4064 | <<locked>> | 90% | 39,740 psi | 76% | 2411 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 41,872 psi | 80% | 2379 fps | 100% |
| IMR 4895 | 56.1 gr | 86% | 35,708 psi | 68% | 2392 fps | 95% |
| IMR 8208 XBR | <<locked>> | 80% | 34,650 psi | 66% | 2310 fps | 95.9% |
| Lovex D073.5 | <<locked>> | 80% | 37,913 psi | 73% | 2379 fps | 97.9% |
| Lovex D073.6 | <<locked>> | 80% | 30,226 psi | 58% | 2264 fps | 96.5% |
| Lovex S060 | <<locked>> | 84% | 38,406 psi | 74% | 2339 fps | 95.6% |
| Lovex S062 | <<locked>> | 84% | 32,532 psi | 62% | 2280 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 32,039 psi | 61% | 2251 fps | 95.1% |
| Norma 202 | <<locked>> | 80% | 31,821 psi | 61% | 2270 fps | 97.7% |
| Norma 203B | <<locked>> | 88% | 36,492 psi | 70% | 2402 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 90% | 38,769 psi | 74% | 2457 fps | 95.4% |
| Ramshot Wild Boar | <<locked>> | 84% | 37,913 psi | 73% | 2411 fps | 95.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 37,681 psi | 72% | 2349 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,092 psi | 48% | 1424 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 38,885 psi | 74% | 2395 fps | 98.4% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 41,075 psi | 79% | 2549 fps | 95.8% |
| ReloadSwiss RS 60 | 60.2 gr | 88% | 32,198 psi | 62% | 2362 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 35,491 psi | 68% | 2310 fps | 98.3% |
| Rottweil R 902 | <<locked>> | 82% | 32,387 psi | 62% | 2254 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 92% | 35,404 psi | 68% | 2385 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 30,226 psi | 58% | 2264 fps | 96.5% |
| Shooters World Precision | <<locked>> | 84% | 32,532 psi | 62% | 2280 fps | 95.4% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 41,176 psi | 79% | 2402 fps | 97.3% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 43,221 psi | 83% | 2487 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 37,565 psi | 72% | 2441 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 41,191 psi | 79% | 2411 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 37,913 psi | 73% | 2402 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 33,924 psi | 65% | 2234 fps | 98.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 27,485 psi | 53% | 2110 fps | 97.2% |
| Somchem S321 | <<locked>> | 80% | 36,579 psi | 70% | 2375 fps | 96.9% |
| Somchem S335 | <<locked>> | 80% | 33,272 psi | 64% | 2241 fps | 98.7% |
| Somchem S341 | <<locked>> | 86% | 38,972 psi | 75% | 2411 fps | 95.7% |
| Somchem S355 | <<locked>> | 90% | 34,664 psi | 66% | 2352 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 38,595 psi | 74% | 2320 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 33,823 psi | 65% | 2244 fps | 99.7% |
| Vihtavuori N135 | <<locked>> | 80% | 28,805 psi | 55% | 2211 fps | 99.2% |
| Vihtavuori N140 | <<locked>> | 80% | 30,066 psi | 58% | 2215 fps | 97.5% |
| Vihtavuori N150 | <<locked>> | 88% | 30,951 psi | 59% | 2251 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 34,229 psi | 66% | 2300 fps | 95.9% |
| Vihtavuori N540 | <<locked>> | 80% | 28,805 psi | 55% | 2198 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 36,825 psi | 71% | 2362 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 32,953 psi | 63% | 2329 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 84% | 34,505 psi | 66% | 2349 fps | 95.1% |
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 74 powders for .375 R Hoelderlin loaded with the .374 | 250gr | Frontier BTSP. ReloadSwiss RS 52 delivers the highest muzzle velocity at 2,654 fps; across all powders the maximum-charge window runs from 1,558 fps to 2,654 fps. Alliant Reloder-17 gives the best case fill at 100 %, and 74 of the 74 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 0.374" calls for a 1:16.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-17, Hodgdon TrailBoss, ReloadSwiss RS 14 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. Hodgdon LEVERevolution, ReloadSwiss RS 60, IMR 4895 rank at the top here: for .375 R Hoelderlin with the .374 | 250gr | Frontier BTSP 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.