Load Specifications
Load data in caliber .375 Fl. Mag. N.E. with .375 | 270gr | Barnes Banded Solid RN bullet and 51 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 SNPE Vectan SP 11.
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% | 41,350 psi | 88% | 2375 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 41,597 psi | 88% | 2411 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 42,612 psi | 90% | 2493 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 86% | 41,205 psi | 87% | 2379 fps | 97.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 41,336 psi | 88% | 2493 fps | 97% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 40,567 psi | 86% | 2402 fps | 98.6% |
| Alliant Reloder-15 | <<locked>> | 84% | 40,959 psi | 87% | 2411 fps | 97.4% |
| Alliant Reloder-16 | <<locked>> | 94% | 40,176 psi | 85% | 2451 fps | 96.5% |
| Alliant Reloder-17 | <<locked>> | 90% | 40,118 psi | 85% | 2480 fps | 98.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,185 psi | 73% | 2349 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 41,814 psi | 89% | 2425 fps | 97% |
| Bofors RP3 | <<locked>> | 86% | 40,030 psi | 85% | 2405 fps | 98.6% |
| Hodgdon H380 | <<locked>> | 86% | 41,205 psi | 87% | 2408 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 41,669 psi | 88% | 2448 fps | 98.4% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 41,481 psi | 88% | 2454 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,027 psi | 74% | 1555 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 41,582 psi | 88% | 2392 fps | 98.4% |
| IMR 3031 | <<locked>> | 82% | 42,424 psi | 90% | 2434 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 40,640 psi | 86% | 2362 fps | 97.4% |
| IMR 4831 | <<locked>> | 96% | 40,915 psi | 87% | 2444 fps | 96.7% |
| IMR 4895 | <<locked>> | 84% | 41,959 psi | 89% | 2438 fps | 98.2% |
| Lovex D073.6 | <<locked>> | 82% | 41,510 psi | 88% | 2408 fps | 99.8% |
| Lovex S062 | <<locked>> | 84% | 40,466 psi | 86% | 2369 fps | 98.8% |
| Norma 201 | <<locked>> | 82% | 41,887 psi | 89% | 2382 fps | 99% |
| Norma 202 | <<locked>> | 82% | 42,163 psi | 89% | 2395 fps | 100% |
| Norma 203B | <<locked>> | 84% | 40,277 psi | 85% | 2398 fps | 97.8% |
| Norma URP | <<locked>> | 94% | 40,161 psi | 85% | 2441 fps | 96.3% |
| Ramshot Big Game | <<locked>> | 86% | 42,641 psi | 90% | 2467 fps | 98.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,418 psi | 75% | 1594 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 39,885 psi | 85% | 2451 fps | 97.1% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 40,001 psi | 85% | 2490 fps | 99.7% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 42,250 psi | 90% | 2507 fps | 96.6% |
| Rottweil R 902 | <<locked>> | 84% | 42,395 psi | 90% | 2385 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 88% | 40,103 psi | 85% | 2398 fps | 98.3% |
| Shooters World Match Rifle | <<locked>> | 82% | 41,510 psi | 88% | 2408 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 40,466 psi | 86% | 2369 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 41,437 psi | 88% | 2448 fps | 97.9% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 41,278 psi | 88% | 2395 fps | 97.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 40,799 psi | 87% | 2310 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 42,612 psi | 90% | 2411 fps | 98.1% |
| Somchem S355 | <<locked>> | 88% | 41,118 psi | 87% | 2405 fps | 98.3% |
| Somchem S365 | <<locked>> | 98% | 40,669 psi | 86% | 2493 fps | 99.3% |
| Vihtavuori N135 | <<locked>> | 84% | 41,481 psi | 88% | 2369 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 42,467 psi | 90% | 2379 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 41,843 psi | 89% | 2392 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 94% | 42,192 psi | 90% | 2444 fps | 96.7% |
| Vihtavuori N540 | <<locked>> | 84% | 40,901 psi | 87% | 2369 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 94% | 41,278 psi | 88% | 2444 fps | 96.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 36,216 psi | 77% | 2415 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 39,943 psi | 85% | 2379 fps | 98.1% |
| Winchester StaBALL Match | <<locked>> | 82% | 40,596 psi | 86% | 2402 fps | 98.3% |
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% | 36,419 psi | 77% | 2287 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 34,432 psi | 73% | 2274 fps | 99.5% |
| Accurate 4350 | <<locked>> | 92% | 36,985 psi | 78% | 2385 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 34,272 psi | 73% | 2238 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 36,187 psi | 77% | 2382 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,489 psi | 71% | 2257 fps | 96.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,085 psi | 77% | 2313 fps | 96% |
| Alliant Reloder-16 | <<locked>> | 92% | 37,782 psi | 80% | 2398 fps | 95.6% |
| Alliant Reloder-17 | 66.6 gr | 84% | 32,895 psi | 70% | 2313 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 98% | 32,155 psi | 68% | 2297 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,117 psi | 83% | 2372 fps | 96.2% |
| Bofors RP3 | <<locked>> | 80% | 32,764 psi | 70% | 2254 fps | 96.6% |
| Hodgdon H380 | <<locked>> | 84% | 38,667 psi | 82% | 2359 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 32,460 psi | 69% | 2254 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,390 psi | 77% | 2356 fps | 97.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,034 psi | 55% | 1388 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,015 psi | 83% | 2346 fps | 97.9% |
| IMR 3031 | <<locked>> | 80% | 39,653 psi | 84% | 2388 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,940 psi | 76% | 2270 fps | 96% |
| IMR 4831 | <<locked>> | 92% | 35,955 psi | 76% | 2349 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 36,941 psi | 78% | 2339 fps | 96.9% |
| Lovex D073.6 | <<locked>> | 80% | 38,754 psi | 82% | 2359 fps | 99.5% |
| Lovex S062 | <<locked>> | 80% | 35,650 psi | 76% | 2274 fps | 97.8% |
| Norma 201 | <<locked>> | 80% | 39,508 psi | 84% | 2336 fps | 98.6% |
| Norma 202 | <<locked>> | 80% | 39,595 psi | 84% | 2349 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 35,505 psi | 75% | 2303 fps | 96.4% |
| Norma URP | <<locked>> | 92% | 37,681 psi | 80% | 2392 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 34,795 psi | 74% | 2306 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,310 psi | 56% | 1421 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 37,173 psi | 79% | 2395 fps | 96.3% |
| ReloadSwiss RS 60 | 63.4 gr | 80% | 30,748 psi | 65% | 2270 fps | 97.3% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 39,668 psi | 84% | 2457 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 37,565 psi | 80% | 2293 fps | 98.2% |
| Rottweil R 903 | <<locked>> | 80% | 30,850 psi | 65% | 2201 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,754 psi | 82% | 2359 fps | 99.5% |
| Shooters World Precision | <<locked>> | 80% | 35,650 psi | 76% | 2274 fps | 97.8% |
| SNPE Vectan SP 11 | 64 gr | 82% | 34,113 psi | 72% | 2297 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,638 psi | 82% | 2346 fps | 97.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,837 psi | 72% | 2182 fps | 99.7% |
| Somchem S341 | <<locked>> | 80% | 39,871 psi | 85% | 2362 fps | 97.5% |
| Somchem S355 | <<locked>> | 80% | 32,024 psi | 68% | 2215 fps | 95.7% |
| Somchem S365 | <<locked>> | 86% | 27,891 psi | 59% | 2192 fps | 95% |
| Vihtavuori N135 | <<locked>> | 80% | 36,637 psi | 78% | 2287 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,347 psi | 79% | 2290 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 30,284 psi | 64% | 2159 fps | 96.6% |
| Vihtavuori N160 | <<locked>> | 90% | 37,028 psi | 79% | 2343 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 35,984 psi | 76% | 2277 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 92% | 38,754 psi | 82% | 2395 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 98% | 34,026 psi | 72% | 2365 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 32,996 psi | 70% | 2231 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,971 psi | 81% | 2349 fps | 97.7% |
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 51 powders for .375 Fl. Mag. N.E. loaded with the .375 | 270gr | Barnes Banded Solid RN. ReloadSwiss RS 62 delivers the highest muzzle velocity at 2,507 fps; across all powders the maximum-charge window runs from 1,555 fps to 2,507 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 51 of the 51 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 1:6.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, 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, SNPE Vectan SP 11 rank at the top here: for .375 Fl. Mag. N.E. with the .375 | 270gr | Barnes Banded Solid RN 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.