Load Specifications
Load data in caliber .375 Fl. Mag. N.E. with .375 | 275gr | SUS-TAC HP bullet and 61 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>> | 86% | 41,162 psi | 87% | 2329 fps | 100% |
| Accurate 4064 | <<locked>> | 88% | 41,176 psi | 87% | 2359 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 41,974 psi | 89% | 2434 fps | 96.6% |
| ADI AR 2206H | <<locked>> | 82% | 40,422 psi | 86% | 2329 fps | 97.4% |
| ADI AR 2208 | <<locked>> | 88% | 41,379 psi | 88% | 2333 fps | 96.9% |
| ADI Benchmark 8208 | <<locked>> | 82% | 42,540 psi | 90% | 2343 fps | 98.9% |
| Alliant AR-Comp | <<locked>> | 82% | 41,568 psi | 88% | 2339 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 41,582 psi | 88% | 2444 fps | 96.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 40,437 psi | 86% | 2352 fps | 98.3% |
| Alliant Reloder-15 | <<locked>> | 86% | 41,031 psi | 87% | 2362 fps | 97.1% |
| Alliant Reloder-16 | <<locked>> | 98% | 42,598 psi | 90% | 2444 fps | 96.8% |
| Alliant Reloder-17 | <<locked>> | 92% | 39,914 psi | 85% | 2421 fps | 97.7% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 41,843 psi | 89% | 2375 fps | 96.7% |
| Bofors RP3 | <<locked>> | 90% | 42,641 psi | 90% | 2402 fps | 98.8% |
| Hodgdon BL-C2 | <<locked>> | 82% | 40,553 psi | 86% | 2356 fps | 99% |
| Hodgdon H4895 | <<locked>> | 82% | 40,712 psi | 86% | 2339 fps | 98% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 41,365 psi | 88% | 2388 fps | 98% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 41,568 psi | 88% | 2408 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,722 psi | 74% | 1506 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 41,800 psi | 89% | 2346 fps | 98.2% |
| IMR 3031 | <<locked>> | 84% | 42,308 psi | 90% | 2388 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 40,799 psi | 87% | 2316 fps | 97.1% |
| IMR 4831 | <<locked>> | 98% | 40,379 psi | 86% | 2388 fps | 96.2% |
| IMR 4895 | <<locked>> | 86% | 41,959 psi | 89% | 2388 fps | 97.9% |
| IMR 8208 XBR | <<locked>> | 82% | 42,540 psi | 90% | 2343 fps | 98.9% |
| Lovex D073.6 | <<locked>> | 84% | 41,452 psi | 88% | 2359 fps | 99.7% |
| Lovex S060 | <<locked>> | 82% | 41,089 psi | 87% | 2277 fps | 97.6% |
| Lovex S062 | <<locked>> | 86% | 40,335 psi | 86% | 2320 fps | 98.6% |
| Norma 201 | <<locked>> | 84% | 42,105 psi | 89% | 2336 fps | 98.9% |
| Norma 202 | <<locked>> | 84% | 42,177 psi | 89% | 2346 fps | 99.9% |
| Norma 203B | <<locked>> | 86% | 40,292 psi | 85% | 2352 fps | 97.5% |
| Norma URP | <<locked>> | 98% | 42,395 psi | 90% | 2431 fps | 96.5% |
| Ramshot Big Game | <<locked>> | 88% | 42,540 psi | 90% | 2411 fps | 97.7% |
| Ramshot Wild Boar | <<locked>> | 82% | 41,452 psi | 88% | 2359 fps | 97.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,911 psi | 74% | 1539 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 42,540 psi | 90% | 2451 fps | 97.5% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 40,059 psi | 85% | 2434 fps | 99.6% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 42,003 psi | 89% | 2451 fps | 96.1% |
| Rottweil R 902 | <<locked>> | 86% | 42,496 psi | 90% | 2336 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 92% | 42,554 psi | 90% | 2395 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 84% | 41,452 psi | 88% | 2359 fps | 99.7% |
| Shooters World Precision | <<locked>> | 86% | 40,335 psi | 86% | 2320 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 41,278 psi | 88% | 2395 fps | 97.6% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 41,452 psi | 88% | 2349 fps | 97.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 41,452 psi | 88% | 2260 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 40,843 psi | 87% | 2264 fps | 100% |
| Somchem S335 | <<locked>> | 82% | 40,698 psi | 86% | 2260 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 39,929 psi | 85% | 2313 fps | 97.2% |
| Somchem S355 | <<locked>> | 90% | 40,886 psi | 87% | 2352 fps | 98% |
| Somchem S365ᴾ | <<locked>> | 100% | 40,219 psi | 85% | 2434 fps | 99% |
| Vihtavuori N133 | <<locked>> | 82% | 41,568 psi | 88% | 2260 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 41,437 psi | 88% | 2323 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 42,496 psi | 90% | 2333 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 41,727 psi | 89% | 2343 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 96% | 42,018 psi | 89% | 2388 fps | 96.3% |
| Vihtavuori N530 | <<locked>> | 82% | 42,453 psi | 90% | 2336 fps | 98.9% |
| Vihtavuori N540 | <<locked>> | 86% | 40,944 psi | 87% | 2326 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 96% | 40,872 psi | 87% | 2388 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 40,147 psi | 85% | 2329 fps | 97.8% |
| Winchester 748 | <<locked>> | 82% | 41,452 psi | 88% | 2379 fps | 99.3% |
| Winchester StaBALL Match | <<locked>> | 84% | 40,669 psi | 86% | 2352 fps | 98.1% |
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% | 33,852 psi | 72% | 2198 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 32,039 psi | 68% | 2182 fps | 98.9% |
| Accurate 4350 | <<locked>> | 94% | 36,564 psi | 78% | 2333 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 37,971 psi | 81% | 2280 fps | 96.8% |
| ADI AR 2208 | <<locked>> | 84% | 36,651 psi | 78% | 2241 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,929 psi | 85% | 2297 fps | 98.4% |
| Alliant AR-Comp | <<locked>> | 80% | 38,972 psi | 83% | 2300 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 38,928 psi | 83% | 2388 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,343 psi | 66% | 2165 fps | 95.7% |
| Alliant Reloder-15 | <<locked>> | 82% | 36,114 psi | 77% | 2267 fps | 95.6% |
| Alliant Reloder-16 | <<locked>> | 94% | 37,840 psi | 80% | 2346 fps | 95.1% |
| Alliant Reloder-17 | 63.1 gr | 86% | 32,895 psi | 70% | 2264 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 36,651 psi | 78% | 2274 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 30,574 psi | 65% | 2162 fps | 95.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,869 psi | 80% | 2306 fps | 98.5% |
| Hodgdon H4895 | <<locked>> | 80% | 38,203 psi | 81% | 2293 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 32,372 psi | 69% | 2201 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 34,127 psi | 72% | 2257 fps | 96.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,817 psi | 55% | 1345 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,767 psi | 78% | 2251 fps | 97% |
| IMR 3031 | <<locked>> | 80% | 37,086 psi | 79% | 2297 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 36,056 psi | 76% | 2224 fps | 95.7% |
| IMR 4831 | <<locked>> | 96% | 37,840 psi | 80% | 2339 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 34,650 psi | 74% | 2244 fps | 95.9% |
| IMR 8208 XBR | <<locked>> | 80% | 39,929 psi | 85% | 2297 fps | 98.4% |
| Lovex D073.6 | <<locked>> | 80% | 36,201 psi | 77% | 2264 fps | 99% |
| Lovex S060 | <<locked>> | 80% | 38,798 psi | 82% | 2234 fps | 97% |
| Lovex S062 | <<locked>> | 80% | 33,620 psi | 71% | 2185 fps | 96.9% |
| Norma 201 | <<locked>> | 80% | 37,275 psi | 79% | 2244 fps | 97.9% |
| Norma 202 | <<locked>> | 80% | 37,260 psi | 79% | 2260 fps | 99.5% |
| Norma 203B | <<locked>> | 80% | 33,301 psi | 71% | 2208 fps | 95.3% |
| Norma URP | <<locked>> | 94% | 37,478 psi | 80% | 2336 fps | 95% |
| Ramshot Big Game | <<locked>> | 82% | 34,853 psi | 74% | 2260 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 38,798 psi | 82% | 2310 fps | 97% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,918 psi | 55% | 1375 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 34,780 psi | 74% | 2297 fps | 95.1% |
| ReloadSwiss RS 60 | 58.7 gr | 80% | 28,950 psi | 61% | 2169 fps | 96% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 39,247 psi | 83% | 2398 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 35,447 psi | 75% | 2201 fps | 97.4% |
| Rottweil R 903 | <<locked>> | 82% | 30,777 psi | 65% | 2159 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 36,201 psi | 77% | 2264 fps | 99% |
| Shooters World Precision | <<locked>> | 80% | 33,620 psi | 71% | 2185 fps | 96.9% |
| SNPE Vectan SP 11 | 60.7 gr | 84% | 34,127 psi | 72% | 2251 fps | 95.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 36,448 psi | 77% | 2254 fps | 96.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,827 psi | 82% | 2215 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,850 psi | 68% | 2096 fps | 99.2% |
| Somchem S335 | <<locked>> | 80% | 38,435 psi | 82% | 2221 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 37,289 psi | 79% | 2264 fps | 96.5% |
| Somchem S355 | <<locked>> | 82% | 31,836 psi | 68% | 2169 fps | 95.3% |
| Somchem S365 | <<locked>> | 90% | 29,428 psi | 62% | 2188 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 38,943 psi | 83% | 2218 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,229 psi | 73% | 2198 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 35,201 psi | 75% | 2201 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 80% | 28,369 psi | 60% | 2070 fps | 95.5% |
| Vihtavuori N160 | <<locked>> | 94% | 39,436 psi | 84% | 2339 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 39,827 psi | 84% | 2290 fps | 98.5% |
| Vihtavuori N540 | <<locked>> | 80% | 33,794 psi | 72% | 2188 fps | 98.8% |
| Vihtavuori N550 | <<locked>> | 94% | 38,377 psi | 81% | 2339 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 33,127 psi | 70% | 2185 fps | 95.4% |
| Winchester 748 | <<locked>> | 80% | 38,653 psi | 82% | 2326 fps | 98.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 35,505 psi | 75% | 2254 fps | 96.7% |
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 61 powders for .375 Fl. Mag. N.E. loaded with the .375 | 275gr | SUS-TAC HP. ReloadSwiss RS 52 delivers the highest muzzle velocity at 2,451 fps; across all powders the maximum-charge window runs from 1,506 fps to 2,451 fps. Hodgdon Hybrid 100V gives the best case fill at 100 %, and 61 of the 61 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 275.0 gr projectile in 0.375" calls for a 1:15.5 twist; slower twists will usually not stabilise this weight. Hodgdon Hybrid 100V, 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 | 275gr | SUS-TAC HP 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.