Load Specifications
Load data in caliber .375 Fl. Mag. N.E. with .375 | 270gr | Barnes LRX BT bullet and 63 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 Ramshot Big Game.
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% | 41,365 psi | 88% | 2303 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 40,480 psi | 86% | 2346 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 40,118 psi | 85% | 2352 fps | 99.4% |
| Accurate 4064 | <<locked>> | 90% | 40,756 psi | 86% | 2379 fps | 99.9% |
| Accurate 4350ᴾ | <<locked>> | 100% | 41,698 psi | 88% | 2451 fps | 96.2% |
| ADI AR 2206H | <<locked>> | 84% | 40,669 psi | 86% | 2356 fps | 97.2% |
| ADI AR 2208 | <<locked>> | 90% | 41,684 psi | 88% | 2359 fps | 96.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 40,277 psi | 85% | 2326 fps | 98.3% |
| Alliant AR-Comp | <<locked>> | 84% | 41,756 psi | 89% | 2372 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 42,134 psi | 89% | 2474 fps | 96.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 40,408 psi | 86% | 2372 fps | 98.1% |
| Alliant Reloder-15 | <<locked>> | 88% | 41,249 psi | 88% | 2388 fps | 96.8% |
| Alliant Reloder-17 | <<locked>> | 94% | 40,306 psi | 86% | 2448 fps | 97.5% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 42,453 psi | 90% | 2408 fps | 96.5% |
| Bofors RP3 | <<locked>> | 92% | 42,554 psi | 90% | 2425 fps | 98.6% |
| Hodgdon Benchmark | <<locked>> | 82% | 42,438 psi | 90% | 2323 fps | 99% |
| Hodgdon BL-C2 | <<locked>> | 84% | 40,872 psi | 87% | 2388 fps | 98.9% |
| Hodgdon CFE223 | <<locked>> | 82% | 42,032 psi | 89% | 2454 fps | 97% |
| Hodgdon H4895 | <<locked>> | 84% | 40,930 psi | 87% | 2369 fps | 97.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 38,986 psi | 83% | 2362 fps | 97.1% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 41,916 psi | 89% | 2438 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,301 psi | 73% | 1512 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 42,250 psi | 90% | 2375 fps | 98% |
| IMR 3031 | <<locked>> | 86% | 42,525 psi | 90% | 2418 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 41,191 psi | 87% | 2343 fps | 96.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 40,350 psi | 86% | 2408 fps | 95.9% |
| IMR 4895 | <<locked>> | 88% | 42,221 psi | 90% | 2418 fps | 97.7% |
| IMR 8208 XBR | <<locked>> | 82% | 40,277 psi | 85% | 2326 fps | 98.3% |
| Lovex D073.6 | <<locked>> | 86% | 41,495 psi | 88% | 2385 fps | 99.6% |
| Lovex S060 | <<locked>> | 84% | 41,597 psi | 88% | 2306 fps | 97.4% |
| Lovex S062 | <<locked>> | 88% | 40,480 psi | 86% | 2346 fps | 98.4% |
| Norma 201 | <<locked>> | 86% | 42,235 psi | 90% | 2362 fps | 98.7% |
| Norma 202 | <<locked>> | 86% | 42,453 psi | 90% | 2375 fps | 99.9% |
| Norma 203B | <<locked>> | 88% | 40,466 psi | 86% | 2379 fps | 97.2% |
| Norma URPᴾ | <<locked>> | 100% | 42,583 psi | 90% | 2454 fps | 96.2% |
| Ramshot Big Game | <<locked>> | 88% | 40,118 psi | 85% | 2388 fps | 96.9% |
| Ramshot Wild Boar | <<locked>> | 84% | 41,974 psi | 89% | 2388 fps | 97.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,403 psi | 73% | 1545 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 40,030 psi | 85% | 2428 fps | 96.5% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 40,277 psi | 85% | 2461 fps | 99.4% |
| Rottweil R 901 | <<locked>> | 82% | 40,872 psi | 87% | 2316 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 86% | 39,958 psi | 85% | 2313 fps | 98.2% |
| Rottweil R 903 | <<locked>> | 94% | 42,467 psi | 90% | 2415 fps | 98.3% |
| Shooters World Match Rifle | <<locked>> | 86% | 41,495 psi | 88% | 2385 fps | 99.6% |
| Shooters World Precision | <<locked>> | 88% | 40,480 psi | 86% | 2346 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 41,655 psi | 88% | 2425 fps | 97.3% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 41,785 psi | 89% | 2379 fps | 97.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 41,727 psi | 89% | 2287 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 41,307 psi | 88% | 2293 fps | 100% |
| Somchem S335 | <<locked>> | 84% | 40,930 psi | 87% | 2290 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 40,379 psi | 86% | 2343 fps | 97% |
| Somchem S355 | <<locked>> | 92% | 40,886 psi | 87% | 2375 fps | 97.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 37,768 psi | 80% | 2405 fps | 98.3% |
| Vihtavuori N133 | <<locked>> | 84% | 41,785 psi | 89% | 2287 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 41,611 psi | 88% | 2352 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 40,132 psi | 85% | 2316 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 94% | 41,872 psi | 89% | 2365 fps | 99% |
| Vihtavuori N160 | <<locked>> | 98% | 42,235 psi | 90% | 2411 fps | 96% |
| Vihtavuori N530 | <<locked>> | 82% | 40,132 psi | 85% | 2320 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 88% | 41,205 psi | 87% | 2352 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 40,524 psi | 86% | 2352 fps | 97.5% |
| Winchester 748 | <<locked>> | 84% | 41,713 psi | 88% | 2405 fps | 99.2% |
| Winchester StaBALL Match | <<locked>> | 86% | 40,973 psi | 87% | 2382 fps | 97.9% |
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% | 38,841 psi | 82% | 2260 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 30,864 psi | 65% | 2169 fps | 99.8% |
| Accurate 2520 | <<locked>> | 80% | 37,318 psi | 79% | 2303 fps | 99% |
| Accurate 4064 | <<locked>> | 80% | 29,254 psi | 62% | 2149 fps | 98% |
| Accurate 4350 | <<locked>> | 98% | 38,957 psi | 83% | 2402 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 35,679 psi | 76% | 2257 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 86% | 36,796 psi | 78% | 2264 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 37,724 psi | 80% | 2277 fps | 97.7% |
| Alliant AR-Comp | <<locked>> | 80% | 36,332 psi | 77% | 2283 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 39,276 psi | 83% | 2415 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 31,169 psi | 66% | 2185 fps | 95.3% |
| Alliant Reloder-15 | <<locked>> | 84% | 36,143 psi | 77% | 2290 fps | 95.3% |
| Alliant Reloder-17 | 65.2 gr | 90% | 35,317 psi | 75% | 2343 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 39,668 psi | 84% | 2356 fps | 95.7% |
| Bofors RP3 | <<locked>> | 82% | 30,197 psi | 64% | 2178 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 39,972 psi | 85% | 2280 fps | 98.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 35,433 psi | 75% | 2283 fps | 97.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 39,189 psi | 83% | 2398 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 80% | 35,882 psi | 76% | 2270 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 34,330 psi | 73% | 2267 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 32,039 psi | 68% | 2231 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,309 psi | 54% | 1345 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 34,679 psi | 74% | 2228 fps | 96% |
| IMR 3031 | <<locked>> | 80% | 34,737 psi | 74% | 2280 fps | 99.9% |
| IMR 4064 | <<locked>> | 84% | 36,274 psi | 77% | 2247 fps | 95.4% |
| IMR 4831 | <<locked>> | 98% | 37,739 psi | 80% | 2359 fps | 95% |
| IMR 4895 | <<locked>> | 82% | 34,606 psi | 73% | 2267 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 37,724 psi | 80% | 2277 fps | 97.7% |
| Lovex D073.6 | <<locked>> | 80% | 33,634 psi | 71% | 2238 fps | 98.2% |
| Lovex S060 | <<locked>> | 80% | 36,738 psi | 78% | 2215 fps | 96.1% |
| Lovex S062 | <<locked>> | 80% | 31,343 psi | 66% | 2159 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 34,853 psi | 74% | 2221 fps | 97% |
| Norma 202 | <<locked>> | 80% | 34,896 psi | 74% | 2238 fps | 99% |
| Norma 203B | <<locked>> | 84% | 35,476 psi | 75% | 2280 fps | 95.8% |
| Norma URP | <<locked>> | 98% | 39,856 psi | 85% | 2405 fps | 95.4% |
| Ramshot Big Game | 61.8 gr | 84% | 35,143 psi | 75% | 2287 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 36,535 psi | 78% | 2287 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,498 psi | 54% | 1381 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 37,405 psi | 79% | 2375 fps | 95.7% |
| ReloadSwiss RS 60 | 59.4 gr | 82% | 28,979 psi | 61% | 2192 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 38,450 psi | 82% | 2274 fps | 99.4% |
| Rottweil R 902 | <<locked>> | 80% | 33,083 psi | 70% | 2175 fps | 96.4% |
| Rottweil R 903 | <<locked>> | 86% | 32,445 psi | 69% | 2221 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 33,634 psi | 71% | 2238 fps | 98.2% |
| Shooters World Precision | <<locked>> | 80% | 31,343 psi | 66% | 2159 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 36,463 psi | 77% | 2323 fps | 95.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 34,272 psi | 73% | 2228 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,782 psi | 78% | 2201 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,965 psi | 64% | 2077 fps | 98.6% |
| Somchem S335 | <<locked>> | 80% | 36,129 psi | 77% | 2201 fps | 99.6% |
| Somchem S341 | <<locked>> | 80% | 35,114 psi | 74% | 2241 fps | 95.4% |
| Somchem S355 | <<locked>> | 86% | 33,837 psi | 72% | 2234 fps | 95.7% |
| Somchem S365 | <<locked>> | 94% | 31,038 psi | 66% | 2251 fps | 95.8% |
| Vihtavuori N133 | <<locked>> | 80% | 36,869 psi | 78% | 2205 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 31,937 psi | 68% | 2178 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 32,982 psi | 70% | 2182 fps | 98.9% |
| Vihtavuori N150 | <<locked>> | 82% | 28,166 psi | 60% | 2090 fps | 95.1% |
| Vihtavuori N160 | <<locked>> | 96% | 39,552 psi | 84% | 2362 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 37,507 psi | 80% | 2270 fps | 97.7% |
| Vihtavuori N540 | <<locked>> | 80% | 31,618 psi | 67% | 2165 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 33,315 psi | 71% | 2205 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 36,332 psi | 77% | 2303 fps | 98.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 33,286 psi | 71% | 2228 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 63 powders for .375 Fl. Mag. N.E. loaded with the .375 | 270gr | Barnes LRX BT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,474 fps; across all powders the maximum-charge window runs from 1,512 fps to 2,474 fps. Accurate 4350 gives the best case fill at 100 %, and 63 of the 63 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (325 MPa), the top charges use 73–90 %, leaving at least 10 % headroom. The 270.0 gr projectile in 0.375" calls for a 1:15.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, 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. ReloadSwiss RS 60, Alliant Reloder-17, Ramshot Big Game rank at the top here: for .375 Fl. Mag. N.E. with the .375 | 270gr | Barnes LRX 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.