Load Specifications
Load data in caliber .375 Win. with .375 | 225gr | Hornady SP bullet and 19 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Shooters World Buffalo Rifle, Lovex D060 and Shooters World Blackout.
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 5744 | <<locked>> | 88% | 49,298 psi | 89% | 2070 fps | 97.2% |
| Accurate No. 11 FS | <<locked>> | 92% | 49,850 psi | 90% | 2064 fps | 99.5% |
| ADI AR 2205 | <<locked>> | 94% | 49,168 psi | 89% | 1985 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 34,621 psi | 63% | 1952 fps | 97.1% |
| Hodgdon LilGun | <<locked>> | 86% | 46,601 psi | 85% | 2070 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 27,064 psi | 49% | 1191 fps | 100% |
| IMR 4227ᴾ | <<locked>> | 100% | 46,195 psi | 84% | 2024 fps | 98.1% |
| Lovex D060 | <<locked>> | 94% | 49,298 psi | 89% | 2070 fps | 97.2% |
| Lovex D063 | <<locked>> | 90% | 48,501 psi | 88% | 2051 fps | 97.1% |
| Lovex S040 | <<locked>> | 86% | 48,472 psi | 88% | 1969 fps | 100% |
| Lovex S053ᴾ | <<locked>> | 100% | 43,439 psi | 79% | 2001 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 25,933 psi | 47% | 1214 fps | 100% |
| ReloadSwiss RS 36ᴾ | <<locked>> | 100% | 44,135 psi | 80% | 2041 fps | 97.7% |
| Shooters World Blackout | <<locked>> | 90% | 48,501 psi | 88% | 2051 fps | 97.1% |
| Shooters World Buffalo Rifle | <<locked>> | 94% | 49,298 psi | 89% | 2070 fps | 97.2% |
| Shooters World SOCOM | <<locked>> | 94% | 49,371 psi | 90% | 2047 fps | 97.7% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 40,219 psi | 73% | 1867 fps | 100% |
| Vihtavuori N110 | <<locked>> | 98% | 49,327 psi | 90% | 2021 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 35,201 psi | 64% | 1932 fps | 98.3% |
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 5744 | <<locked>> | 82% | 41,191 psi | 75% | 1955 fps | 95.4% |
| Accurate No. 11 FS | <<locked>> | 80% | 34,040 psi | 62% | 1847 fps | 97% |
| ADI AR 2205 | <<locked>> | 80% | 32,648 psi | 59% | 1759 fps | 98.3% |
| ADI AR 2207 | <<locked>> | 94% | 29,167 psi | 53% | 1847 fps | 95.2% |
| Hodgdon LilGun | <<locked>> | 80% | 38,000 psi | 69% | 1965 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 19,464 psi | 35% | 1056 fps | 100% |
| IMR 4227 | <<locked>> | 90% | 34,693 psi | 63% | 1854 fps | 95.5% |
| Lovex D060 | 23.6 gr | 88% | 41,582 psi | 75% | 1962 fps | 95.5% |
| Lovex D063 | <<locked>> | 84% | 39,914 psi | 72% | 1936 fps | 95.1% |
| Lovex S040 | <<locked>> | 80% | 40,408 psi | 73% | 1870 fps | 100% |
| Lovex S053 | <<locked>> | 80% | 24,903 psi | 45% | 1683 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 19,087 psi | 35% | 1086 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 92% | 34,867 psi | 63% | 1903 fps | 95.4% |
| Shooters World Blackout | 25.1 gr | 84% | 39,914 psi | 72% | 1936 fps | 95.1% |
| Shooters World Buffalo Rifle | 23.6 gr | 88% | 41,582 psi | 75% | 1962 fps | 95.5% |
| Shooters World SOCOM | <<locked>> | 86% | 38,072 psi | 69% | 1896 fps | 95.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 23,815 psi | 43% | 1604 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 29,167 psi | 53% | 1749 fps | 100% |
| Vihtavuori N120 | <<locked>> | 90% | 26,527 psi | 48% | 1762 fps | 95.3% |
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 19 powders for .375 Win. loaded with the .375 | 225gr | Hornady SP. Accurate 5744 delivers the highest muzzle velocity at 2,070 fps; across all powders the maximum-charge window runs from 1,191 fps to 2,070 fps. ADI AR 2207 gives the best case fill at 100 %, and 19 of the 19 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 47–90 %, leaving at least 10 % headroom. ADI AR 2207, Hodgdon TrailBoss, IMR 4227 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. Shooters World Buffalo Rifle, Lovex D060, Shooters World Blackout rank at the top here: for .375 Win. with the .375 | 225gr | Hornady SP 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.