Load Specifications
Load data in caliber .375 Fl. Mag. N.E. with .375 | 260gr | Nosler Solid bullet and 56 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 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 2495 | <<locked>> | 86% | 42,395 psi | 90% | 2438 fps | 100% |
| Accurate 4064 | <<locked>> | 88% | 42,540 psi | 90% | 2474 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 40,741 psi | 86% | 2503 fps | 96.1% |
| ADI AR 2206H | <<locked>> | 82% | 41,423 psi | 88% | 2441 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 88% | 42,395 psi | 90% | 2441 fps | 97% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 40,103 psi | 85% | 2507 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 41,626 psi | 88% | 2464 fps | 98.4% |
| Alliant Reloder-15 | <<locked>> | 86% | 42,235 psi | 90% | 2477 fps | 97.3% |
| Alliant Reloder-16 | <<locked>> | 96% | 41,220 psi | 87% | 2510 fps | 96.2% |
| Alliant Reloder-17 | <<locked>> | 92% | 41,278 psi | 88% | 2543 fps | 98% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 40,292 psi | 85% | 2438 fps | 96.1% |
| Bofors RP3 | <<locked>> | 88% | 41,191 psi | 87% | 2470 fps | 98.4% |
| Hodgdon BL-C2 | <<locked>> | 82% | 41,872 psi | 89% | 2474 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 88% | 42,482 psi | 90% | 2474 fps | 95.9% |
| Hodgdon H4895 | <<locked>> | 82% | 41,713 psi | 88% | 2454 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 40,118 psi | 85% | 2457 fps | 97.6% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 40,103 psi | 85% | 2470 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,766 psi | 74% | 1581 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 40,176 psi | 85% | 2408 fps | 97.7% |
| IMR 3031 | <<locked>> | 82% | 40,944 psi | 87% | 2457 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 41,989 psi | 89% | 2428 fps | 97.2% |
| IMR 4831 | <<locked>> | 98% | 41,858 psi | 89% | 2503 fps | 96.5% |
| IMR 4895 | <<locked>> | 84% | 40,451 psi | 86% | 2454 fps | 97.4% |
| Lovex D073.6 | <<locked>> | 82% | 39,900 psi | 85% | 2425 fps | 99.5% |
| Lovex S060 | <<locked>> | 82% | 42,148 psi | 89% | 2392 fps | 97.7% |
| Lovex S062 | <<locked>> | 86% | 41,597 psi | 88% | 2434 fps | 98.7% |
| Norma 201 | <<locked>> | 82% | 40,654 psi | 86% | 2402 fps | 98.5% |
| Norma 202 | <<locked>> | 82% | 40,712 psi | 86% | 2415 fps | 99.8% |
| Norma 203B | <<locked>> | 86% | 41,539 psi | 88% | 2467 fps | 97.6% |
| Norma URP | <<locked>> | 96% | 41,118 psi | 87% | 2500 fps | 96% |
| Ramshot Big Game | <<locked>> | 86% | 41,075 psi | 87% | 2477 fps | 97.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,114 psi | 74% | 1617 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 41,118 psi | 87% | 2520 fps | 97% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 41,205 psi | 87% | 2552 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 84% | 41,147 psi | 87% | 2405 fps | 98.6% |
| Rottweil R 903 | <<locked>> | 90% | 41,104 psi | 87% | 2461 fps | 98.2% |
| Shooters World Match Rifle | <<locked>> | 82% | 39,900 psi | 85% | 2425 fps | 99.5% |
| Shooters World Precision | <<locked>> | 86% | 41,597 psi | 88% | 2434 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 42,656 psi | 90% | 2513 fps | 97.7% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 42,540 psi | 90% | 2369 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 42,569 psi | 90% | 2461 fps | 97.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 42,424 psi | 90% | 2369 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 42,076 psi | 89% | 2375 fps | 100% |
| Somchem S335 | <<locked>> | 82% | 41,814 psi | 89% | 2372 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 41,118 psi | 87% | 2425 fps | 97.4% |
| Somchem S355 | <<locked>> | 90% | 42,163 psi | 89% | 2467 fps | 98.2% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,597 psi | 88% | 2552 fps | 99.2% |
| Vihtavuori N133 | <<locked>> | 82% | 42,540 psi | 90% | 2369 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 42,641 psi | 90% | 2434 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 41,133 psi | 87% | 2402 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 90% | 40,277 psi | 85% | 2408 fps | 98.9% |
| Vihtavuori N540 | <<locked>> | 86% | 42,192 psi | 90% | 2438 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 96% | 42,424 psi | 90% | 2507 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 41,350 psi | 88% | 2441 fps | 98% |
| Winchester 748 | <<locked>> | 82% | 42,583 psi | 90% | 2490 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 84% | 41,858 psi | 89% | 2467 fps | 98.2% |
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 2495 | <<locked>> | 80% | 34,911 psi | 74% | 2303 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 33,011 psi | 70% | 2287 fps | 99% |
| Accurate 4350 | <<locked>> | 94% | 38,000 psi | 81% | 2448 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 38,870 psi | 82% | 2392 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 84% | 37,565 psi | 80% | 2349 fps | 95.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 37,507 psi | 80% | 2451 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,213 psi | 68% | 2267 fps | 95.8% |
| Alliant Reloder-15 | <<locked>> | 82% | 37,086 psi | 79% | 2375 fps | 95.8% |
| Alliant Reloder-16 | <<locked>> | 94% | 38,783 psi | 82% | 2457 fps | 95.3% |
| Alliant Reloder-17 | 68 gr | 86% | 33,881 psi | 72% | 2375 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 37,753 psi | 80% | 2385 fps | 95.3% |
| Bofors RP3 | 61 gr | 80% | 31,575 psi | 67% | 2267 fps | 95.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,117 psi | 83% | 2421 fps | 98.6% |
| Hodgdon H380 | <<locked>> | 86% | 39,871 psi | 85% | 2421 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 39,175 psi | 83% | 2402 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 33,301 psi | 71% | 2310 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,085 psi | 74% | 2365 fps | 96.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,802 psi | 55% | 1411 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,695 psi | 80% | 2359 fps | 97.1% |
| IMR 3031 | <<locked>> | 80% | 38,232 psi | 81% | 2408 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 34,838 psi | 74% | 2283 fps | 95% |
| IMR 4831 | <<locked>> | 96% | 39,218 psi | 83% | 2454 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 35,592 psi | 76% | 2352 fps | 96% |
| Lovex D073.6 | <<locked>> | 80% | 37,391 psi | 79% | 2375 fps | 99.1% |
| Lovex S060 | <<locked>> | 80% | 39,624 psi | 84% | 2343 fps | 97.1% |
| Lovex S062 | <<locked>> | 80% | 34,490 psi | 73% | 2290 fps | 97% |
| Norma 201 | <<locked>> | 80% | 38,189 psi | 81% | 2352 fps | 98% |
| Norma 202 | <<locked>> | 80% | 38,159 psi | 81% | 2365 fps | 99.6% |
| Norma 203B | <<locked>> | 80% | 34,185 psi | 73% | 2313 fps | 95.4% |
| Norma URP | <<locked>> | 94% | 38,595 psi | 82% | 2451 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 82% | 35,984 psi | 76% | 2372 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,049 psi | 55% | 1444 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 35,868 psi | 76% | 2408 fps | 95.3% |
| ReloadSwiss RS 60 | 63.3 gr | 80% | 29,776 psi | 63% | 2277 fps | 96.2% |
| Rottweil R 902 | <<locked>> | 80% | 36,390 psi | 77% | 2310 fps | 97.5% |
| Rottweil R 903 | <<locked>> | 82% | 31,749 psi | 67% | 2264 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,391 psi | 79% | 2375 fps | 99.1% |
| Shooters World Precision | <<locked>> | 80% | 34,490 psi | 73% | 2290 fps | 97% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 35,114 psi | 74% | 2359 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 40,045 psi | 85% | 2326 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,478 psi | 80% | 2362 fps | 96.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,914 psi | 85% | 2326 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,822 psi | 70% | 2198 fps | 99.3% |
| Somchem S335 | <<locked>> | 80% | 39,291 psi | 83% | 2326 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 38,435 psi | 82% | 2375 fps | 96.6% |
| Somchem S355 | <<locked>> | 82% | 32,851 psi | 70% | 2274 fps | 95.5% |
| Somchem S365 | <<locked>> | 90% | 30,371 psi | 64% | 2297 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 40,045 psi | 85% | 2326 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 35,346 psi | 75% | 2306 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 36,172 psi | 77% | 2310 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 80% | 29,240 psi | 62% | 2172 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 34,664 psi | 74% | 2293 fps | 98.9% |
| Vihtavuori N550 | <<locked>> | 94% | 39,682 psi | 84% | 2454 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 33,997 psi | 72% | 2287 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 39,900 psi | 85% | 2441 fps | 99% |
| Winchester StaBALL Match | <<locked>> | 80% | 36,550 psi | 78% | 2362 fps | 96.9% |
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 56 powders for .375 Fl. Mag. N.E. loaded with the .375 | 260gr | Nosler Solid. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,552 fps; across all powders the maximum-charge window runs from 1,581 fps to 2,552 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 56 of the 56 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 260.0 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. ReloadSwiss RS 60, Alliant Reloder-17, Bofors RP3 rank at the top here: for .375 Fl. Mag. N.E. with the .375 | 260gr | Nosler Solid 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.