Load Specifications
Load data in caliber .375 Win. with .375 | 200gr | Winchester SPFN Powerpoint bullet and 19 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate No. 11 FS, ADI AR 2205 and Vihtavuori N110.
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>> | 92% | 48,994 psi | 89% | 2244 fps | 96.5% |
| Accurate No. 11 FS | <<locked>> | 92% | 49,516 psi | 90% | 2241 fps | 99.2% |
| ADI AR 2205 | <<locked>> | 94% | 48,776 psi | 89% | 2159 fps | 99.9% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 34,171 psi | 62% | 2110 fps | 96.2% |
| Hodgdon LilGun | <<locked>> | 88% | 49,501 psi | 90% | 2290 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 26,716 psi | 48% | 1302 fps | 100% |
| IMR 4227ᴾ | <<locked>> | 100% | 46,006 psi | 83% | 2195 fps | 97.5% |
| Lovex D060 | <<locked>> | 94% | 48,501 psi | 88% | 2238 fps | 96.4% |
| Lovex D063 | <<locked>> | 94% | 48,675 psi | 88% | 2218 fps | 97% |
| Lovex S040 | <<locked>> | 86% | 47,747 psi | 87% | 2139 fps | 100% |
| Lovex S053ᴾ | <<locked>> | 100% | 42,931 psi | 78% | 2172 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 25,918 psi | 47% | 1332 fps | 100% |
| ReloadSwiss RS 36ᴾ | <<locked>> | 100% | 43,555 psi | 79% | 2208 fps | 97% |
| Shooters World Blackout | <<locked>> | 90% | 47,906 psi | 87% | 2221 fps | 96.3% |
| Shooters World Buffalo Rifle | <<locked>> | 94% | 48,501 psi | 88% | 2238 fps | 96.4% |
| Shooters World SOCOM | <<locked>> | 94% | 48,675 psi | 88% | 2218 fps | 97% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 39,784 psi | 72% | 2031 fps | 100% |
| Vihtavuori N110 | <<locked>> | 98% | 48,457 psi | 88% | 2195 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 34,766 psi | 63% | 2090 fps | 97.6% |
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 5744 | <<locked>> | 88% | 43,671 psi | 79% | 2165 fps | 95.3% |
| Accurate No. 11 FS | 26 gr | 80% | 33,605 psi | 61% | 1998 fps | 96.2% |
| ADI AR 2205 | 23.9 gr | 80% | 32,213 psi | 58% | 1906 fps | 97.6% |
| ADI AR 2207 | <<locked>> | 98% | 32,184 psi | 58% | 2070 fps | 95.5% |
| Hodgdon LilGun | <<locked>> | 80% | 37,347 psi | 68% | 2133 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 19,479 psi | 35% | 1161 fps | 100% |
| IMR 4227 | <<locked>> | 92% | 36,405 psi | 66% | 2047 fps | 95.2% |
| Lovex D060 | <<locked>> | 90% | 43,671 psi | 79% | 2165 fps | 95.3% |
| Lovex D063 | <<locked>> | 88% | 40,364 psi | 73% | 2100 fps | 95.1% |
| Lovex S040 | <<locked>> | 80% | 40,016 psi | 73% | 2037 fps | 100% |
| Lovex S053 | <<locked>> | 82% | 25,773 psi | 47% | 1850 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 18,739 psi | 34% | 1184 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 94% | 36,463 psi | 66% | 2096 fps | 95.1% |
| Shooters World Blackout | <<locked>> | 88% | 45,136 psi | 82% | 2182 fps | 95.7% |
| Shooters World Buffalo Rifle | <<locked>> | 90% | 43,671 psi | 79% | 2165 fps | 95.3% |
| Shooters World SOCOM | <<locked>> | 88% | 40,364 psi | 73% | 2100 fps | 95.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 23,438 psi | 43% | 1739 fps | 99.8% |
| Vihtavuori N110 | 21.5 gr | 80% | 28,732 psi | 52% | 1896 fps | 99.9% |
| Vihtavuori N120 | <<locked>> | 94% | 29,240 psi | 53% | 1978 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 21 powders for .375 Win. loaded with the .375 | 200gr | Winchester SPFN Powerpoint. Hodgdon LilGun delivers the highest muzzle velocity at 2,290 fps; across all powders the maximum-charge window runs from 1,302 fps to 2,290 fps. Accurate 1680 gives the best case fill at 100 %, and 21 of the 21 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. Accurate 1680, ADI AR 2207, Alliant Reloder-7 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. Accurate No. 11 FS, ADI AR 2205, Vihtavuori N110 rank at the top here: for .375 Win. with the .375 | 200gr | Winchester SPFN Powerpoint they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 1680, Alliant Reloder-7 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.