Load Specifications
Load data in caliber .375 Fl. Mag. N.E. with .375 | 270gr | Reichenberg HDB Universal 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 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>> | 88% | 42,554 psi | 90% | 2392 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 41,843 psi | 89% | 2395 fps | 99.7% |
| Accurate 4064 | <<locked>> | 88% | 40,059 psi | 85% | 2379 fps | 99.9% |
| Accurate 4350 | <<locked>> | 98% | 40,973 psi | 87% | 2454 fps | 96.3% |
| ADI AR 2206H | <<locked>> | 84% | 42,264 psi | 90% | 2402 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 88% | 40,683 psi | 86% | 2356 fps | 96.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 41,727 psi | 89% | 2365 fps | 98.7% |
| Alliant AR-Comp | <<locked>> | 82% | 40,770 psi | 86% | 2365 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 40,886 psi | 87% | 2467 fps | 96.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 42,177 psi | 89% | 2418 fps | 98.6% |
| Alliant Reloder-15 | <<locked>> | 86% | 40,176 psi | 85% | 2385 fps | 96.9% |
| Alliant Reloder-16 | <<locked>> | 98% | 41,989 psi | 89% | 2467 fps | 96.6% |
| Alliant Reloder-17 | <<locked>> | 94% | 42,090 psi | 89% | 2503 fps | 98.3% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 41,350 psi | 88% | 2405 fps | 96.5% |
| Bofors RP3 | <<locked>> | 90% | 41,713 psi | 88% | 2425 fps | 98.6% |
| Hodgdon BL-C2 | <<locked>> | 84% | 42,569 psi | 90% | 2431 fps | 99.3% |
| Hodgdon H4895 | <<locked>> | 84% | 42,598 psi | 90% | 2415 fps | 98.4% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 40,611 psi | 86% | 2411 fps | 97.8% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 40,886 psi | 87% | 2431 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,476 psi | 73% | 1529 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 41,162 psi | 87% | 2372 fps | 98% |
| IMR 3031 | <<locked>> | 84% | 41,437 psi | 88% | 2411 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 40,103 psi | 85% | 2339 fps | 96.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 42,351 psi | 90% | 2461 fps | 96.8% |
| IMR 4895 | <<locked>> | 86% | 41,133 psi | 87% | 2415 fps | 97.7% |
| IMR 8208 XBR | <<locked>> | 82% | 41,727 psi | 89% | 2365 fps | 98.7% |
| Lovex D073.6 | <<locked>> | 84% | 40,408 psi | 86% | 2382 fps | 99.6% |
| Lovex S060 | <<locked>> | 82% | 40,393 psi | 86% | 2303 fps | 97.4% |
| Lovex S062 | <<locked>> | 88% | 42,061 psi | 89% | 2388 fps | 98.9% |
| Norma 201 | <<locked>> | 84% | 41,234 psi | 87% | 2359 fps | 98.7% |
| Norma 202 | <<locked>> | 84% | 41,423 psi | 88% | 2372 fps | 99.9% |
| Norma 203B | <<locked>> | 88% | 42,018 psi | 89% | 2421 fps | 97.9% |
| Norma URP | <<locked>> | 98% | 41,800 psi | 89% | 2457 fps | 96.4% |
| Ramshot Big Game | <<locked>> | 88% | 41,916 psi | 89% | 2438 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 82% | 40,799 psi | 87% | 2385 fps | 97.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,606 psi | 73% | 1565 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 41,829 psi | 89% | 2477 fps | 97.3% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 41,916 psi | 89% | 2510 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 41,191 psi | 87% | 2474 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 82% | 42,351 psi | 90% | 2356 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 86% | 41,626 psi | 88% | 2359 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 92% | 41,568 psi | 88% | 2415 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 84% | 40,408 psi | 86% | 2382 fps | 99.6% |
| Shooters World Precision | <<locked>> | 88% | 42,061 psi | 89% | 2388 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 40,683 psi | 86% | 2421 fps | 97.4% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 42,380 psi | 90% | 2385 fps | 95.8% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 40,669 psi | 86% | 2372 fps | 97.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 40,538 psi | 86% | 2283 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 40,176 psi | 85% | 2287 fps | 100% |
| Somchem S335 | <<locked>> | 84% | 42,540 psi | 90% | 2329 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 42,163 psi | 89% | 2392 fps | 97.7% |
| Somchem S355 | <<locked>> | 90% | 40,103 psi | 85% | 2375 fps | 97.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 39,537 psi | 84% | 2457 fps | 98.9% |
| Vihtavuori N133 | <<locked>> | 82% | 40,683 psi | 86% | 2283 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 40,727 psi | 86% | 2349 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 41,727 psi | 89% | 2359 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 40,944 psi | 87% | 2365 fps | 99% |
| Vihtavuori N160 | <<locked>> | 96% | 41,278 psi | 88% | 2411 fps | 96.1% |
| Vihtavuori N530 | <<locked>> | 82% | 41,785 psi | 89% | 2365 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 86% | 40,248 psi | 85% | 2349 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 42,134 psi | 89% | 2402 fps | 98.2% |
| Winchester 748 | <<locked>> | 82% | 40,669 psi | 86% | 2402 fps | 99.2% |
| Winchester StaBALL Match | <<locked>> | 84% | 39,972 psi | 85% | 2379 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 2495 | <<locked>> | 80% | 32,503 psi | 69% | 2211 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 39,015 psi | 83% | 2346 fps | 99.4% |
| Accurate 4064 | <<locked>> | 80% | 30,806 psi | 65% | 2195 fps | 98.6% |
| Accurate 4350 | <<locked>> | 96% | 38,247 psi | 81% | 2402 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 37,115 psi | 79% | 2303 fps | 96.5% |
| ADI AR 2208 | <<locked>> | 84% | 35,911 psi | 76% | 2260 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,204 psi | 83% | 2320 fps | 98.2% |
| Alliant AR-Comp | <<locked>> | 80% | 38,014 psi | 81% | 2323 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 38,261 psi | 81% | 2411 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 30,501 psi | 65% | 2182 fps | 95.3% |
| Alliant Reloder-15 | <<locked>> | 82% | 35,244 psi | 75% | 2283 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 96% | 39,479 psi | 84% | 2418 fps | 95.7% |
| Alliant Reloder-17 | 66.2 gr | 88% | 34,360 psi | 73% | 2336 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 38,537 psi | 82% | 2349 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 29,530 psi | 63% | 2172 fps | 95% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,014 psi | 79% | 2326 fps | 98.3% |
| Hodgdon H4895 | <<locked>> | 80% | 37,362 psi | 79% | 2313 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 33,707 psi | 72% | 2270 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,417 psi | 71% | 2277 fps | 96.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,411 psi | 54% | 1362 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,100 psi | 77% | 2274 fps | 96.7% |
| IMR 3031 | <<locked>> | 80% | 36,318 psi | 77% | 2320 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 35,302 psi | 75% | 2244 fps | 95.4% |
| IMR 4831 | <<locked>> | 96% | 37,028 psi | 79% | 2359 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 33,779 psi | 72% | 2264 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 39,204 psi | 83% | 2320 fps | 98.2% |
| Lovex D073.6 | <<locked>> | 80% | 35,302 psi | 75% | 2283 fps | 98.8% |
| Lovex S060 | <<locked>> | 80% | 37,985 psi | 81% | 2257 fps | 96.8% |
| Lovex S062 | <<locked>> | 80% | 32,590 psi | 69% | 2201 fps | 96.6% |
| Norma 201 | <<locked>> | 80% | 36,332 psi | 77% | 2267 fps | 97.7% |
| Norma 202 | <<locked>> | 80% | 36,448 psi | 77% | 2280 fps | 99.4% |
| Norma 203B | <<locked>> | 82% | 34,592 psi | 73% | 2274 fps | 95.8% |
| Norma URP | <<locked>> | 96% | 39,044 psi | 83% | 2405 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 82% | 34,214 psi | 73% | 2283 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 38,014 psi | 81% | 2329 fps | 96.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,628 psi | 54% | 1398 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 36,535 psi | 78% | 2372 fps | 95.7% |
| ReloadSwiss RS 60 | 60.2 gr | 80% | 28,181 psi | 60% | 2185 fps | 95.5% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 38,508 psi | 82% | 2421 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 39,755 psi | 84% | 2310 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 80% | 34,374 psi | 73% | 2218 fps | 97.1% |
| Rottweil R 903 | <<locked>> | 84% | 31,763 psi | 67% | 2218 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,302 psi | 75% | 2283 fps | 98.8% |
| Shooters World Precision | <<locked>> | 80% | 32,590 psi | 69% | 2201 fps | 96.6% |
| SNPE Vectan SP 11 | 63.7 gr | 86% | 35,621 psi | 76% | 2320 fps | 95.8% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 39,436 psi | 84% | 2333 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 35,752 psi | 76% | 2277 fps | 96% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,145 psi | 81% | 2241 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,212 psi | 66% | 2119 fps | 99.1% |
| Somchem S335 | <<locked>> | 80% | 37,565 psi | 80% | 2244 fps | 99.8% |
| Somchem S341 | <<locked>> | 80% | 36,709 psi | 78% | 2287 fps | 96.3% |
| Somchem S355 | <<locked>> | 84% | 33,112 psi | 70% | 2234 fps | 95.8% |
| Somchem S365 | <<locked>> | 92% | 30,560 psi | 65% | 2257 fps | 96% |
| Vihtavuori N133 | <<locked>> | 80% | 38,319 psi | 81% | 2244 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,402 psi | 71% | 2218 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 34,432 psi | 73% | 2224 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 80% | 27,514 psi | 58% | 2083 fps | 95% |
| Vihtavuori N160 | <<locked>> | 94% | 38,740 psi | 82% | 2362 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 38,972 psi | 83% | 2313 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 80% | 33,040 psi | 70% | 2211 fps | 98.7% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 32,445 psi | 69% | 2205 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 37,956 psi | 81% | 2352 fps | 98.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 34,737 psi | 74% | 2274 fps | 96.4% |
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 63 powders for .375 Fl. Mag. N.E. loaded with the .375 | 270gr | Reichenberg HDB Universal. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,510 fps; across all powders the maximum-charge window runs from 1,529 fps to 2,510 fps. Hodgdon Hybrid 100V 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 1:16.5 twist; slower twists will usually not stabilise this weight. Hodgdon Hybrid 100V, Hodgdon TrailBoss, IMR 4831 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 | Reichenberg HDB Universal 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.