Load Specifications
Load data in caliber .375 Fl. Mag. N.E. with .375 | 250gr | Lehigh Defense Controlled Fracturing bullet and 58 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-17 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: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 82% | 40,828 psi | 87% | 2405 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 39,726 psi | 84% | 2444 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 42,206 psi | 90% | 2500 fps | 99.4% |
| Accurate 4064 | <<locked>> | 90% | 40,074 psi | 85% | 2477 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 84% | 39,987 psi | 85% | 2451 fps | 96.5% |
| ADI AR 2208 | <<locked>> | 90% | 41,162 psi | 87% | 2454 fps | 95.9% |
| ADI Benchmark 8208 | <<locked>> | 84% | 42,279 psi | 90% | 2470 fps | 98.2% |
| Alliant AR-Comp | <<locked>> | 84% | 40,930 psi | 87% | 2474 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 42,525 psi | 90% | 2520 fps | 98% |
| Alliant Reloder-15 | <<locked>> | 88% | 40,437 psi | 86% | 2480 fps | 96% |
| Alliant Reloder-17 | <<locked>> | 96% | 42,351 psi | 90% | 2595 fps | 97.4% |
| Bofors RP3 | <<locked>> | 92% | 41,945 psi | 89% | 2523 fps | 98% |
| Hodgdon Benchmark | <<locked>> | 82% | 42,003 psi | 89% | 2425 fps | 98.6% |
| Hodgdon BL-C2 | <<locked>> | 84% | 40,118 psi | 85% | 2480 fps | 98.3% |
| Hodgdon CFE223 | <<locked>> | 82% | 41,524 psi | 88% | 2552 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 84% | 40,248 psi | 85% | 2464 fps | 97.2% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 38,363 psi | 81% | 2454 fps | 96.3% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 41,249 psi | 88% | 2533 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,026 psi | 72% | 1588 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 41,626 psi | 88% | 2470 fps | 97.4% |
| IMR 3031 | <<locked>> | 86% | 41,785 psi | 89% | 2520 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 40,596 psi | 86% | 2438 fps | 96.1% |
| IMR 4895 | <<locked>> | 88% | 41,394 psi | 88% | 2510 fps | 97% |
| IMR 8208 XBR | <<locked>> | 84% | 42,279 psi | 90% | 2470 fps | 98.2% |
| Lovex D073.6 | <<locked>> | 86% | 40,770 psi | 86% | 2484 fps | 99.2% |
| Lovex S060 | <<locked>> | 84% | 41,104 psi | 87% | 2405 fps | 96.8% |
| Lovex S062 | <<locked>> | 90% | 42,395 psi | 90% | 2487 fps | 98.4% |
| Norma 201 | <<locked>> | 86% | 41,524 psi | 88% | 2457 fps | 98.2% |
| Norma 202 | <<locked>> | 86% | 41,872 psi | 89% | 2477 fps | 99.7% |
| Norma 203B | <<locked>> | 90% | 42,453 psi | 90% | 2523 fps | 97.2% |
| Ramshot Big Game | <<locked>> | 90% | 42,235 psi | 90% | 2536 fps | 96.8% |
| Ramshot Wild Boar | <<locked>> | 84% | 41,278 psi | 88% | 2484 fps | 96.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,258 psi | 73% | 1627 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 42,177 psi | 89% | 2579 fps | 96.5% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 42,424 psi | 90% | 2612 fps | 99.4% |
| Rottweil R 901 | <<locked>> | 82% | 40,190 psi | 85% | 2411 fps | 99.3% |
| Rottweil R 902 | <<locked>> | 88% | 41,872 psi | 89% | 2457 fps | 98.2% |
| Rottweil R 903 | <<locked>> | 94% | 41,640 psi | 88% | 2510 fps | 97.7% |
| Shooters World Match Rifle | <<locked>> | 86% | 40,770 psi | 86% | 2484 fps | 99.2% |
| Shooters World Precision | <<locked>> | 90% | 42,395 psi | 90% | 2487 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 40,959 psi | 87% | 2516 fps | 96.6% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 41,147 psi | 87% | 2470 fps | 96.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 41,133 psi | 87% | 2385 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 40,567 psi | 86% | 2388 fps | 99.9% |
| Somchem S321 | <<locked>> | 82% | 42,467 psi | 90% | 2493 fps | 98.5% |
| Somchem S335 | <<locked>> | 84% | 40,379 psi | 86% | 2388 fps | 99.8% |
| Somchem S341 | <<locked>> | 86% | 42,569 psi | 90% | 2490 fps | 97% |
| Somchem S355 | <<locked>> | 92% | 40,321 psi | 86% | 2470 fps | 97.1% |
| Somchem S365ᴾ | <<locked>> | 100% | 37,043 psi | 79% | 2493 fps | 97.5% |
| Vihtavuori N133 | <<locked>> | 84% | 41,220 psi | 87% | 2388 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 40,857 psi | 87% | 2454 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 42,090 psi | 89% | 2461 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 94% | 41,118 psi | 87% | 2461 fps | 98.5% |
| Vihtavuori N530 | <<locked>> | 84% | 42,337 psi | 90% | 2467 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 88% | 40,553 psi | 86% | 2451 fps | 99.5% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 39,958 psi | 85% | 2444 fps | 96.8% |
| Winchester 748 | <<locked>> | 84% | 41,089 psi | 87% | 2503 fps | 98.8% |
| Winchester StaBALL Match | <<locked>> | 86% | 40,335 psi | 86% | 2477 fps | 97.2% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 38,276 psi | 81% | 2359 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 30,356 psi | 64% | 2257 fps | 99.6% |
| Accurate 2520 | <<locked>> | 80% | 36,753 psi | 78% | 2395 fps | 98.5% |
| Accurate 4064 | <<locked>> | 80% | 28,776 psi | 61% | 2234 fps | 97.3% |
| ADI AR 2206H | <<locked>> | 82% | 37,550 psi | 80% | 2402 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 88% | 38,711 psi | 82% | 2408 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 37,159 psi | 79% | 2369 fps | 97% |
| Alliant AR-Comp | <<locked>> | 80% | 35,650 psi | 76% | 2382 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 32,648 psi | 69% | 2320 fps | 95.1% |
| Alliant Reloder-15 | <<locked>> | 86% | 38,014 psi | 81% | 2431 fps | 95.2% |
| Alliant Reloder-17 | 70 gr | 92% | 37,130 psi | 79% | 2484 fps | 95.7% |
| Bofors RP3 | <<locked>> | 86% | 34,113 psi | 72% | 2365 fps | 95.8% |
| Hodgdon Benchmark | <<locked>> | 80% | 39,523 psi | 84% | 2379 fps | 98.1% |
| Hodgdon BL-C2 | <<locked>> | 80% | 34,896 psi | 74% | 2375 fps | 97% |
| Hodgdon CFE223 | <<locked>> | 80% | 38,653 psi | 82% | 2493 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 35,317 psi | 75% | 2359 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 36,027 psi | 76% | 2405 fps | 95.4% |
| Hodgdon LEVERevolution | 62.1 gr | 82% | 33,649 psi | 71% | 2369 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,295 psi | 54% | 1421 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 34,185 psi | 73% | 2320 fps | 95.1% |
| IMR 3031 | <<locked>> | 80% | 34,069 psi | 72% | 2372 fps | 99.6% |
| IMR 4064 | <<locked>> | 86% | 38,116 psi | 81% | 2388 fps | 95.3% |
| IMR 4895 | <<locked>> | 84% | 36,332 psi | 77% | 2408 fps | 95.4% |
| IMR 8208 XBR | <<locked>> | 80% | 37,159 psi | 79% | 2369 fps | 97% |
| Lovex D073.6 | <<locked>> | 80% | 33,054 psi | 70% | 2329 fps | 97.6% |
| Lovex S060 | <<locked>> | 80% | 36,390 psi | 77% | 2310 fps | 95.3% |
| Lovex S062 | <<locked>> | 82% | 32,938 psi | 70% | 2293 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 34,389 psi | 73% | 2313 fps | 96.2% |
| Norma 202 | <<locked>> | 80% | 34,418 psi | 73% | 2329 fps | 98.5% |
| Norma 203B | <<locked>> | 86% | 37,289 psi | 79% | 2421 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 86% | 37,043 psi | 79% | 2431 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 35,984 psi | 76% | 2375 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,280 psi | 54% | 1453 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 39,334 psi | 83% | 2523 fps | 95.6% |
| ReloadSwiss RS 60 | 63.9 gr | 84% | 30,443 psi | 65% | 2326 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 37,768 psi | 80% | 2365 fps | 99% |
| Rottweil R 902 | <<locked>> | 80% | 32,721 psi | 69% | 2267 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 88% | 34,055 psi | 72% | 2359 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 33,054 psi | 70% | 2329 fps | 97.6% |
| Shooters World Precision | <<locked>> | 82% | 32,938 psi | 70% | 2293 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 38,392 psi | 81% | 2467 fps | 95.8% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 36,085 psi | 77% | 2369 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,318 psi | 77% | 2293 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,544 psi | 63% | 2165 fps | 98.1% |
| Somchem S321 | <<locked>> | 80% | 39,581 psi | 84% | 2441 fps | 97.9% |
| Somchem S335 | <<locked>> | 80% | 35,665 psi | 76% | 2297 fps | 99.3% |
| Somchem S341 | <<locked>> | 82% | 37,101 psi | 79% | 2382 fps | 95.4% |
| Somchem S355 | <<locked>> | 88% | 35,389 psi | 75% | 2372 fps | 95.6% |
| Somchem S365 | <<locked>> | 96% | 32,692 psi | 69% | 2388 fps | 95.8% |
| Vihtavuori N133 | <<locked>> | 80% | 36,405 psi | 77% | 2303 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 31,401 psi | 67% | 2270 fps | 99.7% |
| Vihtavuori N140 | <<locked>> | 80% | 32,489 psi | 69% | 2270 fps | 98.3% |
| Vihtavuori N150 | <<locked>> | 84% | 29,617 psi | 63% | 2218 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 37,057 psi | 79% | 2365 fps | 97.1% |
| Vihtavuori N540 | <<locked>> | 80% | 31,169 psi | 66% | 2254 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 35,056 psi | 74% | 2339 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 35,679 psi | 76% | 2395 fps | 97.5% |
| Winchester StaBALL Match | <<locked>> | 82% | 35,114 psi | 74% | 2369 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 58 powders for .375 Fl. Mag. N.E. loaded with the .375 | 250gr | Lehigh Defense Controlled Fracturing. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,612 fps; across all powders the maximum-charge window runs from 1,588 fps to 2,612 fps. Hodgdon Hybrid 100V gives the best case fill at 100 %, and 58 of the 58 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (325 MPa), the top charges use 72–90 %, leaving at least 10 % headroom. The 250.0 gr projectile in 0.375" calls for a 1:16.5 twist; slower twists will usually not stabilise this weight. Hodgdon Hybrid 100V, 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. ReloadSwiss RS 60, Alliant Reloder-17, Hodgdon LEVERevolution rank at the top here: for .375 Fl. Mag. N.E. with the .375 | 250gr | Lehigh Defense Controlled Fracturing 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.