Load Specifications
Load data in caliber .375 Raptor with .375 | 300gr | Swift A-Frame bullet and 70 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, Somchem S321 and Hodgdon H322.
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>> | 84% | 50,241 psi | 87% | 2031 fps | 100% |
| Accurate 2015 | <<locked>> | 98% | 50,633 psi | 87% | 2103 fps | 100% |
| Accurate 2230 | <<locked>> | 88% | 49,588 psi | 85% | 2129 fps | 96.1% |
| Accurate 2460 | <<locked>> | 94% | 49,008 psi | 84% | 2116 fps | 99.4% |
| Accurate 2495ᴾ | <<locked>> | 100% | 41,553 psi | 72% | 2057 fps | 100% |
| Accurate 2520 | <<locked>> | 98% | 48,994 psi | 84% | 2149 fps | 99.2% |
| Accurate 4064ᴾ | <<locked>> | 100% | 38,682 psi | 67% | 2037 fps | 98.6% |
| Accurate LT-30 | <<locked>> | 90% | 50,923 psi | 88% | 2041 fps | 100% |
| Accurate LT-32 | <<locked>> | 90% | 51,401 psi | 89% | 2051 fps | 99.3% |
| ADI AR 2206Hᴾ | <<locked>> | 100% | 49,516 psi | 85% | 2146 fps | 96.6% |
| ADI AR 2207 | <<locked>> | 88% | 50,908 psi | 88% | 2067 fps | 100% |
| ADI AR 2219 | <<locked>> | 92% | 51,996 psi | 90% | 2162 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 98% | 49,574 psi | 85% | 2123 fps | 97.9% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 49,719 psi | 86% | 2159 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 94% | 50,111 psi | 86% | 2198 fps | 97.6% |
| Alliant Reloder-10x | <<locked>> | 94% | 51,474 psi | 89% | 2119 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 88% | 52,402 psi | 90% | 2077 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 92% | 52,489 psi | 90% | 2080 fps | 100% |
| Hodgdon Benchmark | <<locked>> | 96% | 49,821 psi | 86% | 2083 fps | 98.4% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 49,908 psi | 86% | 2182 fps | 98.5% |
| Hodgdon CFE223 | <<locked>> | 98% | 52,475 psi | 90% | 2241 fps | 96.5% |
| Hodgdon H322 | <<locked>> | 94% | 50,227 psi | 87% | 2142 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 94% | 51,285 psi | 88% | 2162 fps | 99.7% |
| Hodgdon H4198 | <<locked>> | 86% | 50,082 psi | 86% | 2041 fps | 99.8% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 49,705 psi | 86% | 2156 fps | 97.3% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 45,005 psi | 78% | 2129 fps | 96.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,735 psi | 56% | 1237 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 48,849 psi | 84% | 2123 fps | 96.9% |
| IMR 3031ᴾ | <<locked>> | 100% | 47,355 psi | 82% | 2159 fps | 100% |
| IMR 4198 | <<locked>> | 92% | 49,850 psi | 86% | 2060 fps | 100% |
| IMR 4227 | <<locked>> | 82% | 50,140 psi | 86% | 1998 fps | 100% |
| IMR 8208 XBR | <<locked>> | 98% | 49,574 psi | 85% | 2123 fps | 97.9% |
| Lovex D073.4 | <<locked>> | 88% | 49,922 psi | 86% | 2126 fps | 99.1% |
| Lovex D073.5 | <<locked>> | 94% | 49,153 psi | 85% | 2119 fps | 98.6% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 46,470 psi | 80% | 2129 fps | 98.9% |
| Lovex S053 | <<locked>> | 84% | 52,141 psi | 90% | 1991 fps | 100% |
| Lovex S060ᴾ | <<locked>> | 100% | 51,706 psi | 89% | 2103 fps | 96.9% |
| Lovex S062ᴾ | <<locked>> | 100% | 42,772 psi | 74% | 2051 fps | 96.7% |
| Norma 200 | <<locked>> | 90% | 51,721 psi | 89% | 2103 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 48,211 psi | 83% | 2106 fps | 97.7% |
| Norma 202ᴾ | <<locked>> | 100% | 48,211 psi | 83% | 2126 fps | 99.5% |
| Ramshot Wild Boarᴾ | <<locked>> | 100% | 51,721 psi | 89% | 2178 fps | 96.9% |
| Ramshot X-Terminator | <<locked>> | 96% | 52,112 psi | 90% | 2129 fps | 96.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,706 psi | 56% | 1266 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 50,053 psi | 86% | 2031 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 94% | 49,893 psi | 86% | 2123 fps | 99% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 52,388 psi | 90% | 2142 fps | 99.7% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 45,571 psi | 79% | 2067 fps | 97.2% |
| Shooters World AR Plus | <<locked>> | 88% | 49,922 psi | 86% | 2126 fps | 99.1% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 46,470 psi | 80% | 2129 fps | 98.9% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 42,772 psi | 74% | 2051 fps | 96.7% |
| Shooters World Tactical Rifle | <<locked>> | 92% | 50,821 psi | 88% | 2100 fps | 97.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 86% | 50,183 psi | 87% | 1850 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 92% | 52,460 psi | 90% | 2169 fps | 99.7% |
| SNPE Vectan SP 3 | <<locked>> | 92% | 49,400 psi | 85% | 2093 fps | 100% |
| SNPE Vectan SP 9ᴾ | <<locked>> | 100% | 47,950 psi | 83% | 2123 fps | 96.2% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 51,779 psi | 89% | 2083 fps | 99.6% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 41,481 psi | 72% | 1972 fps | 99.2% |
| Somchem S321 | <<locked>> | 96% | 50,357 psi | 87% | 2156 fps | 98.3% |
| Somchem S335ᴾ | <<locked>> | 100% | 49,995 psi | 86% | 2087 fps | 99.8% |
| Somchem S341ᴾ | <<locked>> | 100% | 50,328 psi | 87% | 2139 fps | 96.4% |
| Vihtavuori N120 | <<locked>> | 88% | 50,908 psi | 88% | 2028 fps | 100% |
| Vihtavuori N130 | <<locked>> | 96% | 51,895 psi | 89% | 2080 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 50,879 psi | 88% | 2080 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 42,815 psi | 74% | 2060 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 45,411 psi | 78% | 2070 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 98% | 50,270 psi | 87% | 2123 fps | 98% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 43,787 psi | 75% | 2067 fps | 98.8% |
| Winchester 748ᴾ | <<locked>> | 100% | 51,401 psi | 89% | 2198 fps | 98.9% |
| Winchester StaBALL Matchᴾ | <<locked>> | 100% | 47,079 psi | 81% | 2126 fps | 96.6% |
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% | 44,179 psi | 76% | 1959 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 29,066 psi | 50% | 1785 fps | 98% |
| Accurate 2230 | <<locked>> | 86% | 46,180 psi | 80% | 2087 fps | 95.3% |
| Accurate 2460 | <<locked>> | 80% | 30,835 psi | 53% | 1837 fps | 95.5% |
| Accurate 2495 | <<locked>> | 80% | 21,640 psi | 37% | 1686 fps | 95.4% |
| Accurate 2520 | <<locked>> | 86% | 32,706 psi | 56% | 1909 fps | 95.8% |
| Accurate 4064 | <<locked>> | 90% | 28,369 psi | 49% | 1850 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 37,985 psi | 65% | 1867 fps | 98.8% |
| Accurate LT-32 | <<locked>> | 80% | 38,392 psi | 66% | 1873 fps | 97.2% |
| ADI AR 2206H | <<locked>> | 96% | 43,801 psi | 76% | 2067 fps | 95.3% |
| ADI AR 2207 | <<locked>> | 80% | 39,987 psi | 69% | 1932 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 35,128 psi | 61% | 1926 fps | 98.1% |
| ADI Benchmark 8208 | <<locked>> | 90% | 38,972 psi | 67% | 1972 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 80% | 26,701 psi | 46% | 1798 fps | 99.3% |
| Alliant Power Pro 1200-R | 40.1 gr | 88% | 41,104 psi | 71% | 2070 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 33,489 psi | 58% | 1873 fps | 99.6% |
| Alliant Reloder-7 | <<locked>> | 80% | 41,263 psi | 71% | 1939 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 35,926 psi | 62% | 1860 fps | 98.6% |
| Hodgdon Benchmark | <<locked>> | 86% | 37,057 psi | 64% | 1900 fps | 95.6% |
| Hodgdon BL-C2 | <<locked>> | 90% | 35,636 psi | 61% | 1972 fps | 95.3% |
| Hodgdon CFE223 | <<locked>> | 94% | 46,209 psi | 80% | 2156 fps | 95% |
| Hodgdon H322 | 36.5 gr | 80% | 32,314 psi | 56% | 1873 fps | 97.4% |
| Hodgdon H335 | <<locked>> | 80% | 32,358 psi | 56% | 1880 fps | 96.3% |
| Hodgdon H4198 | <<locked>> | 80% | 41,916 psi | 72% | 1932 fps | 99% |
| Hodgdon H4895 | <<locked>> | 94% | 41,394 psi | 71% | 2041 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 39,697 psi | 68% | 2044 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,134 psi | 42% | 1102 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 43,265 psi | 75% | 2047 fps | 95.7% |
| IMR 3031 | <<locked>> | 80% | 25,599 psi | 44% | 1775 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 35,331 psi | 61% | 1864 fps | 100% |
| IMR 4227 | <<locked>> | 80% | 47,355 psi | 82% | 1969 fps | 100% |
| IMR 8208 XBR | <<locked>> | 90% | 38,972 psi | 67% | 1972 fps | 95.5% |
| Lovex D073.4 | <<locked>> | 80% | 37,840 psi | 65% | 1959 fps | 97% |
| Lovex D073.5 | <<locked>> | 84% | 34,998 psi | 60% | 1913 fps | 95.5% |
| Lovex D073.6 | <<locked>> | 88% | 31,183 psi | 54% | 1893 fps | 95.2% |
| Lovex S053 | <<locked>> | 80% | 46,340 psi | 80% | 1929 fps | 100% |
| Lovex S060 | <<locked>> | 94% | 43,265 psi | 75% | 1988 fps | 95% |
| Lovex S062 | <<locked>> | 96% | 37,782 psi | 65% | 1972 fps | 95.3% |
| Norma 200 | <<locked>> | 80% | 37,942 psi | 65% | 1929 fps | 100% |
| Norma 201 | <<locked>> | 92% | 37,927 psi | 65% | 1959 fps | 95.3% |
| Norma 202 | <<locked>> | 84% | 29,298 psi | 51% | 1824 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 96% | 45,571 psi | 79% | 2100 fps | 95.6% |
| Ramshot X-Terminator | <<locked>> | 92% | 45,745 psi | 79% | 2047 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,975 psi | 41% | 1125 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 47,094 psi | 81% | 1998 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 34,069 psi | 59% | 1890 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 82% | 31,096 psi | 54% | 1821 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 94% | 37,927 psi | 65% | 1952 fps | 95.3% |
| Shooters World AR Plus | <<locked>> | 80% | 37,840 psi | 65% | 1959 fps | 97% |
| Shooters World Match Rifle | <<locked>> | 88% | 31,183 psi | 54% | 1893 fps | 95.2% |
| Shooters World Precision | <<locked>> | 96% | 37,782 psi | 65% | 1972 fps | 95.3% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 41,568 psi | 72% | 1978 fps | 95.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 43,105 psi | 74% | 1775 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 35,491 psi | 61% | 1929 fps | 97.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 34,127 psi | 59% | 1877 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 45,121 psi | 78% | 2083 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 30,168 psi | 52% | 1765 fps | 95.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 27,470 psi | 47% | 1729 fps | 95.4% |
| Somchem S321 | 42.2 gr | 86% | 36,187 psi | 62% | 1949 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 27,557 psi | 48% | 1732 fps | 95.4% |
| Somchem S341 | <<locked>> | 98% | 47,007 psi | 81% | 2096 fps | 95.7% |
| Vihtavuori N120 | <<locked>> | 80% | 40,147 psi | 69% | 1900 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 32,256 psi | 56% | 1808 fps | 99.3% |
| Vihtavuori N133 | <<locked>> | 80% | 28,050 psi | 48% | 1742 fps | 97.4% |
| Vihtavuori N135 | <<locked>> | 80% | 23,308 psi | 40% | 1699 fps | 95.8% |
| Vihtavuori N140 | <<locked>> | 86% | 29,646 psi | 51% | 1811 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 90% | 38,754 psi | 67% | 1965 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 88% | 30,153 psi | 52% | 1837 fps | 95.2% |
| Winchester 748 | <<locked>> | 88% | 34,766 psi | 60% | 1949 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 96% | 41,408 psi | 71% | 2047 fps | 95.2% |
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 70 powders for .375 Raptor loaded with the .375 | 300gr | Swift A-Frame. Hodgdon CFE223 delivers the highest muzzle velocity at 2,241 fps; across all powders the maximum-charge window runs from 1,237 fps to 2,241 fps. Accurate 2495 gives the best case fill at 100 %, and 70 of the 70 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. The 300.0 gr projectile in 0.375" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, ADI AR 2206H 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, Somchem S321, Hodgdon H322 rank at the top here: for .375 Raptor with the .375 | 300gr | Swift A-Frame they combine a high case fill with complete burn and sit in the upper velocity band. Hodgdon TrailBoss 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.