Load Specifications
Load data in caliber .375 Fl. Mag. N.E. with .375 | 250gr | Barnes Solid BT bullet and 54 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Hodgdon LEVERevolution and Bofors RP3.
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% | 40,640 psi | 86% | 2382 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 42,482 psi | 90% | 2470 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 41,989 psi | 89% | 2474 fps | 99.2% |
| Accurate 4064 | <<locked>> | 92% | 42,525 psi | 90% | 2500 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 86% | 42,322 psi | 90% | 2474 fps | 96.8% |
| ADI Benchmark 8208 | <<locked>> | 84% | 41,945 psi | 89% | 2441 fps | 97.9% |
| Alliant AR-Comp | <<locked>> | 84% | 40,480 psi | 86% | 2448 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 41,872 psi | 89% | 2487 fps | 97.6% |
| Alliant Reloder-17 | <<locked>> | 96% | 41,785 psi | 89% | 2559 fps | 96.9% |
| Bofors RP3 | <<locked>> | 92% | 41,394 psi | 88% | 2490 fps | 97.6% |
| Hodgdon Benchmark | <<locked>> | 82% | 41,626 psi | 88% | 2395 fps | 98.3% |
| Hodgdon BL-C2 | <<locked>> | 86% | 42,525 psi | 90% | 2503 fps | 98.6% |
| Hodgdon H4895 | <<locked>> | 86% | 42,569 psi | 90% | 2484 fps | 97.4% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 40,640 psi | 86% | 2497 fps | 97.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,113 psi | 72% | 1572 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 41,176 psi | 87% | 2441 fps | 97% |
| IMR 3031 | <<locked>> | 86% | 41,060 psi | 87% | 2487 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 42,641 psi | 90% | 2454 fps | 96.3% |
| IMR 4895 | <<locked>> | 88% | 41,075 psi | 87% | 2484 fps | 96.6% |
| IMR 8208 XBR | <<locked>> | 84% | 41,945 psi | 89% | 2441 fps | 97.9% |
| Lovex D073.6 | <<locked>> | 86% | 40,292 psi | 85% | 2454 fps | 99% |
| Lovex S060 | <<locked>> | 84% | 40,770 psi | 86% | 2375 fps | 96.3% |
| Lovex S062 | <<locked>> | 90% | 41,945 psi | 89% | 2457 fps | 98% |
| Norma 201 | <<locked>> | 86% | 41,452 psi | 88% | 2434 fps | 97.9% |
| Norma 202 | <<locked>> | 86% | 41,423 psi | 88% | 2448 fps | 99.5% |
| Norma 203B | <<locked>> | 90% | 41,974 psi | 89% | 2490 fps | 96.8% |
| Ramshot Big Game | <<locked>> | 90% | 41,771 psi | 89% | 2503 fps | 96.3% |
| Ramshot Wild Boar | <<locked>> | 84% | 40,785 psi | 87% | 2451 fps | 96.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,432 psi | 73% | 1611 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 41,626 psi | 88% | 2543 fps | 96% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 41,901 psi | 89% | 2575 fps | 99.1% |
| Rottweil R 901 | <<locked>> | 82% | 40,277 psi | 85% | 2388 fps | 99.2% |
| Rottweil R 902 | <<locked>> | 88% | 41,814 psi | 89% | 2431 fps | 97.9% |
| Rottweil R 903 | <<locked>> | 94% | 41,162 psi | 87% | 2480 fps | 97.3% |
| Shooters World Match Rifle | <<locked>> | 86% | 40,292 psi | 85% | 2454 fps | 99% |
| Shooters World Precision | <<locked>> | 90% | 41,945 psi | 89% | 2457 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 40,364 psi | 86% | 2484 fps | 96% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 40,654 psi | 86% | 2441 fps | 96.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 40,930 psi | 87% | 2359 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 40,074 psi | 85% | 2359 fps | 99.8% |
| Somchem S321 | <<locked>> | 82% | 42,003 psi | 89% | 2464 fps | 98.2% |
| Somchem S335 | <<locked>> | 84% | 40,176 psi | 85% | 2362 fps | 99.7% |
| Somchem S341 | <<locked>> | 86% | 41,959 psi | 89% | 2454 fps | 96.5% |
| Somchem S355 | <<locked>> | 94% | 42,395 psi | 90% | 2487 fps | 97.3% |
| Somchem S365ᴾ | <<locked>> | 100% | 36,724 psi | 78% | 2461 fps | 97% |
| Vihtavuori N133 | <<locked>> | 84% | 40,886 psi | 87% | 2362 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 40,306 psi | 86% | 2425 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 41,684 psi | 88% | 2431 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 94% | 40,596 psi | 86% | 2431 fps | 98.1% |
| Vihtavuori N530 | <<locked>> | 84% | 41,872 psi | 89% | 2434 fps | 98% |
| Vihtavuori N540 | <<locked>> | 88% | 40,147 psi | 85% | 2421 fps | 99.3% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 42,293 psi | 90% | 2461 fps | 97% |
| Winchester 748 | <<locked>> | 84% | 40,466 psi | 86% | 2470 fps | 98.4% |
| Winchester StaBALL Match | <<locked>> | 88% | 42,496 psi | 90% | 2493 fps | 97.4% |
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% | 38,072 psi | 81% | 2336 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 30,632 psi | 65% | 2241 fps | 99.5% |
| Accurate 2520 | <<locked>> | 80% | 36,463 psi | 77% | 2369 fps | 98.2% |
| Accurate 4064 | <<locked>> | 80% | 29,008 psi | 62% | 2218 fps | 97.1% |
| ADI AR 2206H | <<locked>> | 82% | 37,333 psi | 79% | 2372 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 36,970 psi | 78% | 2343 fps | 96.6% |
| Alliant AR-Comp | <<locked>> | 80% | 35,447 psi | 75% | 2359 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 34,650 psi | 74% | 2343 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 92% | 36,753 psi | 78% | 2448 fps | 95.1% |
| Bofors RP3 | 60.7 gr | 86% | 33,823 psi | 72% | 2339 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 39,117 psi | 83% | 2346 fps | 97.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 34,650 psi | 74% | 2349 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 80% | 35,215 psi | 75% | 2336 fps | 95.3% |
| Hodgdon LEVERevolution | 61.3 gr | 84% | 35,708 psi | 76% | 2395 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,295 psi | 54% | 1401 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 36,245 psi | 77% | 2343 fps | 95.5% |
| IMR 3031 | <<locked>> | 80% | 33,765 psi | 72% | 2346 fps | 99.5% |
| IMR 4064 | <<locked>> | 88% | 40,205 psi | 85% | 2408 fps | 95.6% |
| IMR 4895 | <<locked>> | 84% | 36,143 psi | 77% | 2382 fps | 95% |
| IMR 8208 XBR | <<locked>> | 80% | 36,970 psi | 78% | 2343 fps | 96.6% |
| Lovex D073.6 | <<locked>> | 80% | 32,938 psi | 70% | 2303 fps | 97.3% |
| Lovex S060 | <<locked>> | 82% | 38,319 psi | 81% | 2326 fps | 95.6% |
| Lovex S062 | <<locked>> | 82% | 32,822 psi | 70% | 2267 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 34,418 psi | 73% | 2290 fps | 95.9% |
| Norma 202 | <<locked>> | 80% | 34,272 psi | 73% | 2306 fps | 98.3% |
| Norma 203B | <<locked>> | 86% | 36,956 psi | 78% | 2392 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 88% | 39,102 psi | 83% | 2451 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 82% | 38,145 psi | 81% | 2402 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,512 psi | 54% | 1437 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 38,841 psi | 82% | 2487 fps | 95.1% |
| ReloadSwiss RS 60 | 63 gr | 86% | 32,358 psi | 69% | 2352 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 37,971 psi | 81% | 2346 fps | 98.8% |
| Rottweil R 902 | <<locked>> | 80% | 32,706 psi | 69% | 2244 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 88% | 33,910 psi | 72% | 2333 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 32,938 psi | 70% | 2303 fps | 97.3% |
| Shooters World Precision | <<locked>> | 82% | 32,822 psi | 70% | 2267 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 37,927 psi | 80% | 2434 fps | 95.2% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 38,203 psi | 81% | 2392 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,071 psi | 77% | 2267 fps | 98.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,385 psi | 62% | 2139 fps | 97.8% |
| Somchem S321 | <<locked>> | 80% | 39,291 psi | 83% | 2411 fps | 97.6% |
| Somchem S335 | <<locked>> | 80% | 35,621 psi | 76% | 2274 fps | 99.1% |
| Somchem S341 | <<locked>> | 84% | 39,204 psi | 83% | 2405 fps | 95.7% |
| Somchem S355 | <<locked>> | 88% | 35,186 psi | 75% | 2346 fps | 95.2% |
| Somchem S365 | <<locked>> | 96% | 32,416 psi | 69% | 2356 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 36,071 psi | 77% | 2274 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 80% | 31,198 psi | 66% | 2244 fps | 99.5% |
| Vihtavuori N140 | <<locked>> | 80% | 32,358 psi | 69% | 2247 fps | 98.1% |
| Vihtavuori N150 | <<locked>> | 86% | 31,386 psi | 67% | 2241 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 36,724 psi | 78% | 2336 fps | 96.7% |
| Vihtavuori N540 | <<locked>> | 80% | 31,053 psi | 66% | 2231 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 36,999 psi | 78% | 2356 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 35,447 psi | 75% | 2369 fps | 97.2% |
| Winchester StaBALL Match | <<locked>> | 82% | 34,853 psi | 74% | 2343 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 54 powders for .375 Fl. Mag. N.E. loaded with the .375 | 250gr | Barnes Solid BT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,575 fps; across all powders the maximum-charge window runs from 1,572 fps to 2,575 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 54 of the 54 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 1:15.0 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14, Somchem S365 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, Hodgdon LEVERevolution, Bofors RP3 rank at the top here: for .375 Fl. Mag. N.E. with the .375 | 250gr | Barnes Solid BT 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.