Load Specifications
Load data in caliber .375 Raptor with .375 | 255gr | Barnes Original FN FB bullet and 64 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester 748, Hodgdon H335 and ADI AR 2219.
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: 22"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 86% | 52,112 psi | 90% | 2287 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 52,185 psi | 90% | 2362 fps | 100% |
| Accurate 2460 | <<locked>> | 96% | 50,952 psi | 88% | 2375 fps | 99% |
| Accurate 2495ᴾ | <<locked>> | 100% | 40,074 psi | 69% | 2264 fps | 99.6% |
| Accurate 2520ᴾ | <<locked>> | 100% | 48,457 psi | 84% | 2388 fps | 98.3% |
| Accurate 4064ᴾ | <<locked>> | 100% | 38,000 psi | 66% | 2244 fps | 97.5% |
| Accurate LT-30 | <<locked>> | 90% | 49,893 psi | 86% | 2260 fps | 99.6% |
| Accurate LT-32 | <<locked>> | 90% | 50,357 psi | 87% | 2270 fps | 98.5% |
| ADI AR 2206Hᴾ | <<locked>> | 100% | 49,139 psi | 85% | 2403 fps | 95.8% |
| ADI AR 2207 | <<locked>> | 88% | 49,908 psi | 86% | 2328 fps | 100% |
| ADI AR 2219 | <<locked>> | 92% | 50,995 psi | 88% | 2427 fps | 99.8% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 51,851 psi | 89% | 2382 fps | 97.2% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 49,284 psi | 85% | 2427 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 96% | 51,503 psi | 89% | 2461 fps | 96.8% |
| Alliant Reloder-10x | <<locked>> | 94% | 50,314 psi | 87% | 2384 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 88% | 51,692 psi | 89% | 2341 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 92% | 51,517 psi | 89% | 2335 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 96% | 49,081 psi | 85% | 2339 fps | 97.7% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 48,298 psi | 83% | 2395 fps | 97.3% |
| Hodgdon H322 | <<locked>> | 98% | 52,272 psi | 90% | 2432 fps | 99.8% |
| Hodgdon H335 | <<locked>> | 92% | 50,314 psi | 87% | 2425 fps | 99.3% |
| Hodgdon H4198 | <<locked>> | 90% | 51,880 psi | 89% | 2332 fps | 99.7% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 49,095 psi | 85% | 2414 fps | 96.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,170 psi | 57% | 1406 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 41,974 psi | 72% | 2349 fps | 99.5% |
| IMR 4198 | <<locked>> | 94% | 51,967 psi | 90% | 2357 fps | 100% |
| IMR 4227 | <<locked>> | 84% | 52,475 psi | 90% | 2294 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 52,040 psi | 90% | 2421 fps | 97.7% |
| Lovex D073.4 | <<locked>> | 90% | 52,069 psi | 90% | 2392 fps | 98.7% |
| Lovex D073.5 | <<locked>> | 96% | 51,576 psi | 89% | 2418 fps | 98.4% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 46,325 psi | 80% | 2383 fps | 98.3% |
| Lovex S053 | <<locked>> | 84% | 51,184 psi | 88% | 2248 fps | 100% |
| Lovex S060ᴾ | <<locked>> | 100% | 51,488 psi | 89% | 2355 fps | 96.1% |
| Lovex S062ᴾ | <<locked>> | 100% | 42,467 psi | 73% | 2294 fps | 95.8% |
| Norma 200 | <<locked>> | 90% | 50,734 psi | 87% | 2368 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 47,935 psi | 83% | 2363 fps | 97% |
| Norma 202ᴾ | <<locked>> | 100% | 47,224 psi | 81% | 2380 fps | 99% |
| Ramshot Wild Boarᴾ | <<locked>> | 100% | 51,605 psi | 89% | 2441 fps | 96.1% |
| Ramshot X-Terminator | <<locked>> | 96% | 50,894 psi | 88% | 2381 fps | 95.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,474 psi | 56% | 1438 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 84% | 52,098 psi | 90% | 2326 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 96% | 52,185 psi | 90% | 2425 fps | 98.9% |
| Rottweil R 901 | <<locked>> | 98% | 48,602 psi | 84% | 2367 fps | 99% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 44,802 psi | 77% | 2311 fps | 96.3% |
| Shooters World AR Plus | <<locked>> | 90% | 52,069 psi | 90% | 2392 fps | 98.7% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 46,325 psi | 80% | 2383 fps | 98.3% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 42,467 psi | 73% | 2294 fps | 95.8% |
| Shooters World Tactical Rifle | <<locked>> | 92% | 50,053 psi | 86% | 2354 fps | 96.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 52,054 psi | 90% | 2121 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 92% | 51,488 psi | 89% | 2433 fps | 99.4% |
| SNPE Vectan SP 3 | <<locked>> | 94% | 50,894 psi | 88% | 2352 fps | 99.9% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 52,272 psi | 90% | 2341 fps | 99.3% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 41,640 psi | 72% | 2214 fps | 98.7% |
| Somchem S321 | <<locked>> | 96% | 49,545 psi | 85% | 2416 fps | 97.6% |
| Somchem S335ᴾ | <<locked>> | 100% | 50,705 psi | 87% | 2342 fps | 99.6% |
| Vihtavuori N120 | <<locked>> | 92% | 52,344 psi | 90% | 2311 fps | 100% |
| Vihtavuori N130 | <<locked>> | 96% | 49,690 psi | 86% | 2325 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 46,891 psi | 81% | 2291 fps | 99.9% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 41,510 psi | 72% | 2270 fps | 99.7% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 44,208 psi | 76% | 2312 fps | 98.8% |
| Vihtavuori N530 | <<locked>> | 98% | 51,692 psi | 89% | 2430 fps | 97.8% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 43,555 psi | 75% | 2332 fps | 98.4% |
| Winchester 748 | <<locked>> | 98% | 52,228 psi | 90% | 2474 fps | 98.5% |
| Winchester StaBALL Match | <<locked>> | 94% | 48,907 psi | 84% | 2420 fps | 96.4% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 22"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 42,873 psi | 74% | 2162 fps | 99.9% |
| Accurate 2015 | <<locked>> | 80% | 28,108 psi | 48% | 1962 fps | 96.5% |
| Accurate 2460 | <<locked>> | 84% | 33,939 psi | 59% | 2103 fps | 95.3% |
| Accurate 2495 | <<locked>> | 84% | 23,656 psi | 41% | 1926 fps | 95% |
| Accurate 2520 | <<locked>> | 92% | 36,651 psi | 63% | 2205 fps | 95.7% |
| Accurate 4064 | <<locked>> | 94% | 31,473 psi | 54% | 2116 fps | 95.4% |
| Accurate LT-30 | <<locked>> | 80% | 36,796 psi | 63% | 2057 fps | 97.7% |
| Accurate LT-32 | <<locked>> | 80% | 37,130 psi | 64% | 2060 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 98% | 46,383 psi | 80% | 2360 fps | 95.1% |
| ADI AR 2207 | <<locked>> | 80% | 39,276 psi | 68% | 2180 fps | 100% |
| ADI AR 2219 | 42.2 gr | 80% | 34,519 psi | 60% | 2159 fps | 97.4% |
| ADI Benchmark 8208 | <<locked>> | 94% | 43,062 psi | 74% | 2254 fps | 95.3% |
| Alliant AR-Comp | <<locked>> | 80% | 26,223 psi | 45% | 2015 fps | 98.7% |
| Alliant Power Pro 1200-R | <<locked>> | 92% | 45,382 psi | 78% | 2369 fps | 95.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 32,895 psi | 57% | 2105 fps | 99.2% |
| Alliant Reloder-7 | <<locked>> | 80% | 40,524 psi | 70% | 2184 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 35,331 psi | 61% | 2089 fps | 98% |
| Hodgdon Benchmark | <<locked>> | 88% | 38,841 psi | 67% | 2175 fps | 95.4% |
| Hodgdon BL-C2 | <<locked>> | 94% | 39,378 psi | 68% | 2254 fps | 95.1% |
| Hodgdon H322 | <<locked>> | 80% | 29,544 psi | 51% | 2049 fps | 95.6% |
| Hodgdon H335 | 44.6 gr | 80% | 33,634 psi | 58% | 2147 fps | 96% |
| Hodgdon H4198 | <<locked>> | 80% | 38,682 psi | 67% | 2131 fps | 98% |
| Hodgdon H4895 | <<locked>> | 96% | 43,047 psi | 74% | 2325 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,120 psi | 42% | 1256 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 27,746 psi | 48% | 2058 fps | 95.8% |
| IMR 4198 | <<locked>> | 80% | 34,693 psi | 60% | 2095 fps | 99.8% |
| IMR 4227 | <<locked>> | 80% | 46,514 psi | 80% | 2219 fps | 100% |
| IMR 8208 XBR | <<locked>> | 92% | 40,553 psi | 70% | 2249 fps | 95.2% |
| Lovex D073.4 | <<locked>> | 80% | 36,651 psi | 63% | 2152 fps | 95.4% |
| Lovex D073.5 | <<locked>> | 86% | 36,709 psi | 63% | 2190 fps | 95.3% |
| Lovex D073.6 | <<locked>> | 92% | 34,737 psi | 60% | 2205 fps | 95.7% |
| Lovex S053 | <<locked>> | 80% | 45,542 psi | 79% | 2177 fps | 100% |
| Lovex S060 | <<locked>> | 98% | 48,269 psi | 83% | 2313 fps | 95.5% |
| Lovex S062 | <<locked>> | 98% | 39,682 psi | 68% | 2251 fps | 95.1% |
| Norma 200 | <<locked>> | 80% | 37,347 psi | 64% | 2171 fps | 99.9% |
| Norma 201 | <<locked>> | 94% | 39,566 psi | 68% | 2236 fps | 95.1% |
| Norma 202 | <<locked>> | 86% | 30,574 psi | 53% | 2086 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 98% | 48,066 psi | 83% | 2395 fps | 95.4% |
| Ramshot X-Terminator | <<locked>> | 94% | 47,761 psi | 82% | 2337 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,902 psi | 41% | 1283 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 46,108 psi | 79% | 2249 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 35,636 psi | 61% | 2161 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 84% | 32,692 psi | 56% | 2088 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 96% | 39,755 psi | 69% | 2232 fps | 95.1% |
| Shooters World AR Plus | <<locked>> | 80% | 36,651 psi | 63% | 2152 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 92% | 34,737 psi | 60% | 2205 fps | 95.7% |
| Shooters World Precision | <<locked>> | 98% | 39,682 psi | 68% | 2251 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 43,685 psi | 75% | 2262 fps | 95.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 42,206 psi | 73% | 2003 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 34,882 psi | 60% | 2164 fps | 96.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 32,967 psi | 57% | 2064 fps | 97.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 31,560 psi | 54% | 2023 fps | 95.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 28,674 psi | 49% | 1979 fps | 95.1% |
| Somchem S321 | <<locked>> | 90% | 40,625 psi | 70% | 2278 fps | 95.7% |
| Somchem S335 | <<locked>> | 82% | 28,877 psi | 50% | 1987 fps | 95.2% |
| Vihtavuori N120 | <<locked>> | 80% | 36,825 psi | 63% | 2102 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 31,154 psi | 54% | 2023 fps | 98.7% |
| Vihtavuori N133 | <<locked>> | 80% | 25,933 psi | 45% | 1915 fps | 95.9% |
| Vihtavuori N135 | <<locked>> | 84% | 25,483 psi | 44% | 1942 fps | 95.4% |
| Vihtavuori N140 | <<locked>> | 88% | 30,589 psi | 53% | 2067 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 90% | 40,045 psi | 69% | 2252 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 90% | 32,097 psi | 55% | 2123 fps | 95.3% |
| Winchester 748 | 48.4 gr | 88% | 37,043 psi | 64% | 2238 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 92% | 45,426 psi | 78% | 2368 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 89 powders for .375 Raptor loaded with the .375 | 255gr | Barnes Original FN FB. Winchester 748 delivers the highest muzzle velocity at 2,474 fps; across all powders the maximum-charge window runs from 1,406 fps to 2,474 fps. Accurate 2015 gives the best case fill at 100 %, and 89 of the 89 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (400 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. Accurate 2015, Accurate 2495, Accurate 2520 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. Winchester 748, Hodgdon H335, ADI AR 2219 rank at the top here: for .375 Raptor with the .375 | 255gr | Barnes Original FN FB they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2200, ADI AR 2208, Alliant Power Pro 2000-MR burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.