Load Specifications
Load data in caliber .375 Fl. Mag. N.E. with .375 | 270gr | Barnes Banded Solid RN LG bullet and 54 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-16, ReloadSwiss RS 60 and Alliant Reloder-17.
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 2495 | <<locked>> | 84% | 40,524 psi | 86% | 2356 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 40,625 psi | 86% | 2388 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 41,379 psi | 88% | 2464 fps | 96.7% |
| ADI AR 2206H | <<locked>> | 82% | 41,945 psi | 89% | 2402 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 86% | 40,393 psi | 86% | 2356 fps | 96.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 40,669 psi | 86% | 2470 fps | 96.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 42,206 psi | 90% | 2425 fps | 98.8% |
| Alliant Reloder-15 | <<locked>> | 84% | 40,103 psi | 85% | 2385 fps | 97% |
| Alliant Reloder-16 | <<locked>> | 96% | 41,742 psi | 89% | 2470 fps | 96.8% |
| Alliant Reloder-17 | <<locked>> | 92% | 41,872 psi | 89% | 2507 fps | 98.4% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 40,828 psi | 87% | 2398 fps | 96.6% |
| Bofors RP3 | <<locked>> | 88% | 41,843 psi | 89% | 2431 fps | 98.8% |
| Hodgdon BL-C2 | <<locked>> | 82% | 42,424 psi | 90% | 2431 fps | 99.4% |
| Hodgdon H4895 | <<locked>> | 82% | 42,308 psi | 90% | 2411 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 40,654 psi | 86% | 2418 fps | 98.1% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 40,654 psi | 86% | 2431 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,954 psi | 74% | 1545 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 40,683 psi | 86% | 2369 fps | 98.1% |
| IMR 3031 | <<locked>> | 82% | 41,510 psi | 88% | 2415 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 42,438 psi | 90% | 2388 fps | 97.6% |
| IMR 4831 | <<locked>> | 98% | 42,554 psi | 90% | 2467 fps | 97% |
| IMR 4895 | <<locked>> | 84% | 41,075 psi | 87% | 2415 fps | 97.9% |
| Lovex D073.6 | <<locked>> | 82% | 40,582 psi | 86% | 2385 fps | 99.7% |
| Lovex S060 | <<locked>> | 82% | 42,612 psi | 90% | 2349 fps | 98.1% |
| Lovex S062 | <<locked>> | 86% | 42,192 psi | 90% | 2395 fps | 99% |
| Norma 201 | <<locked>> | 82% | 41,162 psi | 87% | 2362 fps | 98.8% |
| Norma 202 | <<locked>> | 82% | 41,249 psi | 88% | 2372 fps | 99.9% |
| Norma 203B | <<locked>> | 86% | 42,032 psi | 89% | 2425 fps | 98% |
| Norma URP | <<locked>> | 96% | 41,698 psi | 88% | 2461 fps | 96.6% |
| Ramshot Big Game | <<locked>> | 86% | 41,539 psi | 88% | 2438 fps | 97.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,157 psi | 75% | 1581 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 41,698 psi | 88% | 2477 fps | 97.4% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 41,727 psi | 89% | 2513 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 41,263 psi | 88% | 2480 fps | 96.2% |
| Rottweil R 902 | <<locked>> | 84% | 41,684 psi | 88% | 2362 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 90% | 41,756 psi | 89% | 2421 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 82% | 40,582 psi | 86% | 2385 fps | 99.7% |
| Shooters World Precision | <<locked>> | 86% | 42,192 psi | 90% | 2395 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 40,524 psi | 86% | 2425 fps | 97.5% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 41,974 psi | 89% | 2385 fps | 96% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 40,480 psi | 86% | 2372 fps | 97.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 42,496 psi | 90% | 2329 fps | 100% |
| Somchem S335 | <<locked>> | 82% | 42,308 psi | 90% | 2329 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 41,669 psi | 88% | 2385 fps | 97.8% |
| Somchem S355 | <<locked>> | 88% | 40,292 psi | 85% | 2382 fps | 98% |
| Somchem S365ᴾ | <<locked>> | 100% | 42,337 psi | 90% | 2516 fps | 99.5% |
| Vihtavuori N135 | <<locked>> | 84% | 40,654 psi | 86% | 2349 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 41,553 psi | 88% | 2359 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 40,872 psi | 87% | 2369 fps | 99.1% |
| Vihtavuori N160 | <<locked>> | 94% | 41,162 psi | 87% | 2415 fps | 96.3% |
| Vihtavuori N540 | <<locked>> | 84% | 40,132 psi | 85% | 2349 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 94% | 40,292 psi | 85% | 2418 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 41,800 psi | 89% | 2402 fps | 98.4% |
| Winchester StaBALL Match | <<locked>> | 84% | 42,453 psi | 90% | 2428 fps | 98.6% |
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 2495 | <<locked>> | 80% | 35,520 psi | 75% | 2267 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 33,620 psi | 71% | 2254 fps | 99.3% |
| Accurate 4350 | <<locked>> | 94% | 38,595 psi | 82% | 2411 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 39,334 psi | 83% | 2352 fps | 97.3% |
| ADI AR 2208 | <<locked>> | 82% | 35,679 psi | 76% | 2260 fps | 95.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 37,971 psi | 81% | 2415 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,793 psi | 70% | 2234 fps | 96.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,244 psi | 75% | 2287 fps | 95.5% |
| Alliant Reloder-16 | 66.4 gr | 92% | 37,130 psi | 79% | 2375 fps | 95.1% |
| Alliant Reloder-17 | 65.2 gr | 84% | 32,140 psi | 68% | 2287 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 38,348 psi | 81% | 2349 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 32,068 psi | 68% | 2231 fps | 96.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,595 psi | 84% | 2379 fps | 99% |
| Hodgdon H4895 | <<locked>> | 80% | 39,653 psi | 84% | 2362 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 31,836 psi | 68% | 2231 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,607 psi | 76% | 2329 fps | 97.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,976 psi | 55% | 1381 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,305 psi | 81% | 2323 fps | 97.5% |
| IMR 3031 | <<locked>> | 80% | 38,740 psi | 82% | 2365 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,244 psi | 75% | 2244 fps | 95.6% |
| IMR 4831 | <<locked>> | 94% | 37,434 psi | 79% | 2372 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 36,071 psi | 77% | 2313 fps | 96.5% |
| Lovex D073.6 | <<locked>> | 80% | 37,811 psi | 80% | 2333 fps | 99.3% |
| Lovex S060 | <<locked>> | 80% | 40,001 psi | 85% | 2300 fps | 97.5% |
| Lovex S062 | <<locked>> | 80% | 34,925 psi | 74% | 2251 fps | 97.5% |
| Norma 201 | <<locked>> | 80% | 38,769 psi | 82% | 2316 fps | 98.4% |
| Norma 202 | <<locked>> | 80% | 38,783 psi | 82% | 2326 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 34,650 psi | 74% | 2277 fps | 96% |
| Norma URP | <<locked>> | 92% | 36,825 psi | 78% | 2365 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 34,098 psi | 72% | 2283 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,092 psi | 55% | 1411 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 36,477 psi | 77% | 2372 fps | 95.9% |
| ReloadSwiss RS 60 | 62.1 gr | 80% | 30,095 psi | 64% | 2244 fps | 96.8% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 38,493 psi | 82% | 2428 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 36,811 psi | 78% | 2270 fps | 97.9% |
| Rottweil R 903 | <<locked>> | 80% | 30,182 psi | 64% | 2178 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,811 psi | 80% | 2333 fps | 99.3% |
| Shooters World Precision | <<locked>> | 80% | 34,925 psi | 74% | 2251 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 33,402 psi | 71% | 2274 fps | 95.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 39,392 psi | 84% | 2336 fps | 95.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,971 psi | 81% | 2323 fps | 96.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,156 psi | 70% | 2159 fps | 99.5% |
| Somchem S335 | <<locked>> | 80% | 39,885 psi | 85% | 2287 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 39,059 psi | 83% | 2339 fps | 97.1% |
| Somchem S355 | <<locked>> | 80% | 31,357 psi | 67% | 2192 fps | 95.3% |
| Somchem S365 | <<locked>> | 88% | 28,979 psi | 61% | 2215 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 80% | 35,766 psi | 76% | 2264 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 36,637 psi | 78% | 2270 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 80% | 29,617 psi | 63% | 2136 fps | 96.2% |
| Vihtavuori N160 | <<locked>> | 92% | 38,609 psi | 82% | 2365 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 35,172 psi | 75% | 2257 fps | 99.2% |
| Vihtavuori N550 | <<locked>> | 92% | 37,768 psi | 80% | 2369 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 32,271 psi | 68% | 2205 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,159 psi | 79% | 2326 fps | 97.4% |
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 | 270gr | Barnes Banded Solid RN LG. Somchem S365 delivers the highest muzzle velocity at 2,516 fps; across all powders the maximum-charge window runs from 1,545 fps to 2,516 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 74–90 %, leaving at least 10 % headroom. The 270.0 gr projectile in 0.375" calls for a 1:6.0 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. Alliant Reloder-16, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for .375 Fl. Mag. N.E. with the .375 | 270gr | Barnes Banded Solid RN LG 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.