Load Specifications
Load data in caliber .375 Raptor with .375 | 305gr | Hammer Stone Hammer bullet and 59 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 1200-R, Hodgdon H335 and SNPE Vectan SP 10.
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% | 50,067 psi | 86% | 1969 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 49,081 psi | 85% | 2028 fps | 100% |
| Accurate 2230 | <<locked>> | 92% | 52,257 psi | 90% | 2096 fps | 95.9% |
| Accurate 2460 | <<locked>> | 98% | 51,024 psi | 88% | 2077 fps | 99.2% |
| Accurate 2495ᴾ | <<locked>> | 100% | 37,101 psi | 64% | 1946 fps | 99.6% |
| Accurate 2520ᴾ | <<locked>> | 100% | 47,703 psi | 82% | 2073 fps | 98.6% |
| Accurate 4064ᴾ | <<locked>> | 100% | 34,577 psi | 60% | 1919 fps | 97.3% |
| Accurate LT-30 | <<locked>> | 92% | 50,662 psi | 87% | 1975 fps | 99.8% |
| Accurate LT-32 | <<locked>> | 92% | 51,198 psi | 88% | 1982 fps | 98.9% |
| ADI AR 2207 | <<locked>> | 90% | 50,328 psi | 87% | 2005 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 51,184 psi | 88% | 2090 fps | 99.8% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 48,472 psi | 84% | 2044 fps | 97.1% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 45,542 psi | 79% | 2054 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 98% | 51,909 psi | 89% | 2156 fps | 97.4% |
| Alliant Reloder-10x | <<locked>> | 96% | 50,067 psi | 86% | 2047 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 90% | 51,996 psi | 90% | 2014 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 51,692 psi | 89% | 2011 fps | 99.9% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 52,170 psi | 90% | 2047 fps | 98.2% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 45,179 psi | 78% | 2057 fps | 97.2% |
| Hodgdon H322 | <<locked>> | 96% | 49,226 psi | 85% | 2067 fps | 99.7% |
| Hodgdon H335 | <<locked>> | 96% | 50,328 psi | 87% | 2087 fps | 99.3% |
| Hodgdon H4198 | <<locked>> | 88% | 49,705 psi | 86% | 1975 fps | 99.5% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 45,513 psi | 78% | 2037 fps | 95.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,256 psi | 56% | 1188 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 43,062 psi | 74% | 2041 fps | 99.7% |
| IMR 4198 | <<locked>> | 96% | 52,185 psi | 90% | 2024 fps | 100% |
| IMR 4227 | <<locked>> | 84% | 50,270 psi | 87% | 1942 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 48,472 psi | 84% | 2044 fps | 97.1% |
| Lovex D073.4 | <<locked>> | 90% | 49,182 psi | 85% | 2054 fps | 98.6% |
| Lovex D073.5 | <<locked>> | 98% | 51,503 psi | 89% | 2083 fps | 98.4% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 41,930 psi | 72% | 2011 fps | 97.7% |
| Lovex S053 | <<locked>> | 86% | 51,822 psi | 89% | 1932 fps | 100% |
| Norma 200 | <<locked>> | 92% | 50,531 psi | 87% | 2034 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 44,164 psi | 76% | 1991 fps | 96.3% |
| Norma 202ᴾ | <<locked>> | 100% | 44,048 psi | 76% | 2011 fps | 98.6% |
| Ramshot X-Terminator | <<locked>> | 98% | 51,329 psi | 88% | 2054 fps | 95.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,894 psi | 55% | 1214 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 84% | 49,835 psi | 86% | 1972 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 52,286 psi | 90% | 2087 fps | 98.9% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 48,501 psi | 84% | 2034 fps | 99% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 41,930 psi | 72% | 1952 fps | 95.7% |
| Shooters World AR Plus | <<locked>> | 90% | 49,182 psi | 85% | 2054 fps | 98.6% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 41,930 psi | 72% | 2011 fps | 97.7% |
| Shooters World Tactical Rifle | <<locked>> | 94% | 50,169 psi | 86% | 2024 fps | 96.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 49,835 psi | 86% | 1795 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 51,532 psi | 89% | 2093 fps | 99.4% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 51,387 psi | 89% | 2054 fps | 100% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 48,138 psi | 83% | 1978 fps | 98.9% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 38,479 psi | 66% | 1870 fps | 98.2% |
| Somchem S321 | <<locked>> | 98% | 49,371 psi | 85% | 2080 fps | 97.6% |
| Somchem S335ᴾ | <<locked>> | 100% | 46,021 psi | 79% | 1978 fps | 99.3% |
| Vihtavuori N120 | <<locked>> | 90% | 50,386 psi | 87% | 1965 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 50,995 psi | 88% | 2011 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 47,108 psi | 81% | 1978 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 39,131 psi | 67% | 1952 fps | 99.7% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 41,814 psi | 72% | 1962 fps | 98.4% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 49,255 psi | 85% | 2047 fps | 97.2% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 40,045 psi | 69% | 1952 fps | 97.6% |
| Winchester 748ᴾ | <<locked>> | 100% | 47,050 psi | 81% | 2073 fps | 97.7% |
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% | 41,234 psi | 71% | 1864 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 26,643 psi | 46% | 1690 fps | 96.7% |
| Accurate 2230 | <<locked>> | 90% | 48,660 psi | 84% | 2054 fps | 95.1% |
| Accurate 2460 | <<locked>> | 84% | 32,300 psi | 56% | 1814 fps | 95.5% |
| Accurate 2495 | <<locked>> | 84% | 22,118 psi | 38% | 1660 fps | 95.2% |
| Accurate 2520 | <<locked>> | 90% | 33,779 psi | 58% | 1877 fps | 95.5% |
| Accurate 4064 | <<locked>> | 94% | 28,718 psi | 50% | 1811 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 35,375 psi | 61% | 1768 fps | 97.8% |
| Accurate LT-32 | <<locked>> | 80% | 35,781 psi | 62% | 1772 fps | 95.9% |
| ADI AR 2207 | <<locked>> | 80% | 37,072 psi | 64% | 1844 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 32,416 psi | 56% | 1818 fps | 96.8% |
| ADI Benchmark 8208 | <<locked>> | 94% | 40,625 psi | 70% | 1936 fps | 95.3% |
| Alliant AR-Comp | <<locked>> | 80% | 24,714 psi | 43% | 1699 fps | 98.3% |
| Alliant Power Pro 1200-R | 38.1 gr | 92% | 42,772 psi | 74% | 2034 fps | 95.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 30,980 psi | 53% | 1778 fps | 99% |
| Alliant Reloder-7 | <<locked>> | 80% | 38,551 psi | 66% | 1847 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 33,417 psi | 58% | 1765 fps | 97.5% |
| Hodgdon Benchmark | <<locked>> | 90% | 38,827 psi | 67% | 1870 fps | 95.4% |
| Hodgdon BL-C2 | <<locked>> | 94% | 37,202 psi | 64% | 1942 fps | 95.1% |
| Hodgdon H322 | <<locked>> | 80% | 29,805 psi | 51% | 1768 fps | 95.8% |
| Hodgdon H335 | 36.3 gr | 82% | 31,879 psi | 55% | 1814 fps | 95.4% |
| Hodgdon H4198 | <<locked>> | 80% | 39,059 psi | 67% | 1834 fps | 98.1% |
| Hodgdon H4895 | <<locked>> | 98% | 42,873 psi | 74% | 2001 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,786 psi | 41% | 1056 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 26,585 psi | 46% | 1745 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 32,996 psi | 57% | 1768 fps | 99.7% |
| IMR 4227 | <<locked>> | 80% | 44,324 psi | 76% | 1877 fps | 100% |
| IMR 8208 XBR | <<locked>> | 94% | 40,625 psi | 70% | 1936 fps | 95.3% |
| Lovex D073.4 | <<locked>> | 80% | 34,592 psi | 60% | 1850 fps | 95.4% |
| Lovex D073.5 | <<locked>> | 88% | 36,463 psi | 63% | 1883 fps | 95.3% |
| Lovex D073.6 | <<locked>> | 94% | 34,243 psi | 59% | 1893 fps | 95.6% |
| Lovex S053 | <<locked>> | 80% | 43,526 psi | 75% | 1844 fps | 100% |
| Norma 200 | <<locked>> | 80% | 34,853 psi | 60% | 1831 fps | 99.8% |
| Norma 201 | <<locked>> | 96% | 39,146 psi | 67% | 1919 fps | 95% |
| Norma 202 | <<locked>> | 88% | 30,429 psi | 52% | 1795 fps | 95.1% |
| Ramshot X-Terminator | <<locked>> | 96% | 48,109 psi | 83% | 2014 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,612 psi | 41% | 1083 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 44,135 psi | 76% | 1906 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 35,679 psi | 62% | 1860 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 86% | 32,401 psi | 56% | 1795 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 98% | 39,479 psi | 68% | 1919 fps | 95% |
| Shooters World AR Plus | <<locked>> | 80% | 34,592 psi | 60% | 1850 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 94% | 34,243 psi | 59% | 1893 fps | 95.6% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 43,729 psi | 75% | 1946 fps | 95.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 40,553 psi | 70% | 1696 fps | 100% |
| SNPE Vectan SP 10 | 35.4 gr | 80% | 32,590 psi | 56% | 1824 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 31,734 psi | 55% | 1778 fps | 97.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 31,517 psi | 54% | 1739 fps | 95.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 28,703 psi | 49% | 1703 fps | 95.2% |
| Somchem S321 | <<locked>> | 92% | 40,350 psi | 70% | 1959 fps | 95.6% |
| Somchem S335 | <<locked>> | 84% | 28,761 psi | 50% | 1709 fps | 95.3% |
| Vihtavuori N120 | <<locked>> | 80% | 37,275 psi | 64% | 1814 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 30,052 psi | 52% | 1719 fps | 98.5% |
| Vihtavuori N133 | <<locked>> | 80% | 26,136 psi | 45% | 1650 fps | 96.1% |
| Vihtavuori N135 | <<locked>> | 84% | 24,163 psi | 42% | 1673 fps | 95.6% |
| Vihtavuori N140 | <<locked>> | 90% | 30,908 psi | 53% | 1785 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 94% | 40,596 psi | 70% | 1932 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 92% | 31,473 psi | 54% | 1811 fps | 95% |
| Winchester 748 | <<locked>> | 94% | 38,856 psi | 67% | 1955 fps | 95.7% |
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 59 powders for .375 Raptor loaded with the .375 | 305gr | Hammer Stone Hammer. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,156 fps; across all powders the maximum-charge window runs from 1,188 fps to 2,156 fps. Accurate 2015 gives the best case fill at 100 %, and 59 of the 59 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (400 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 305.0 gr projectile in 0.375" calls for a 1:17.0 twist; slower twists will usually not stabilise this weight. 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. Alliant Power Pro 1200-R, Hodgdon H335, SNPE Vectan SP 10 rank at the top here: for .375 Raptor with the .375 | 305gr | Hammer Stone Hammer they combine a high case fill with complete burn and sit in the upper velocity band. Hodgdon TrailBoss, ReloadSwiss RS 14 stay subsonic at start load. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.