Load Specifications
Load data in caliber .375 Win. with .375 | 175gr | Lehigh Defense Controlled Fracturing bullet and 9 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon LilGun, Lovex S040 and ADI AR 2205.
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 No. 11 FSᴾ | <<locked>> | 100% | 47,601 psi | 86% | 2365 fps | 97.4% |
| ADI APS 450 | <<locked>> | 82% | 48,573 psi | 88% | 1719 fps | 100% |
| ADI AR 2205ᴾ | <<locked>> | 100% | 44,324 psi | 80% | 2244 fps | 98.4% |
| Hodgdon LilGun | <<locked>> | 98% | 47,703 psi | 87% | 2461 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 20,523 psi | 37% | 1335 fps | 100% |
| Lovex S040 | <<locked>> | 96% | 49,298 psi | 89% | 2323 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 18,362 psi | 33% | 1352 fps | 100% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 27,804 psi | 50% | 2008 fps | 99.9% |
| Vihtavuori N110ᴾ | <<locked>> | 100% | 35,592 psi | 65% | 2201 fps | 100% |
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 No. 11 FS | <<locked>> | 94% | 37,898 psi | 69% | 2224 fps | 95.3% |
| ADI APS 450 | <<locked>> | 80% | 46,775 psi | 85% | 1696 fps | 100% |
| ADI AR 2205 | 25.4 gr | 90% | 31,807 psi | 58% | 2044 fps | 95.6% |
| Hodgdon LilGun | 24.7 gr | 80% | 23,047 psi | 42% | 2047 fps | 98.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 13,605 psi | 25% | 1181 fps | 100% |
| Lovex S040 | 21.2 gr | 80% | 29,254 psi | 53% | 2014 fps | 98.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 12,009 psi | 22% | 1194 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 15,780 psi | 29% | 1690 fps | 95.4% |
| Vihtavuori N110 | <<locked>> | 82% | 18,884 psi | 34% | 1841 fps | 95.8% |
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 9 powders for .375 Win. loaded with the .375 | 175gr | Lehigh Defense Controlled Fracturing. Hodgdon LilGun delivers the highest muzzle velocity at 2,461 fps; across all powders the maximum-charge window runs from 1,335 fps to 2,461 fps. Accurate No. 11 FS gives the best case fill at 100 %, and 9 of the 9 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 33–89 %, leaving at least 11 % headroom. Accurate No. 11 FS, ADI AR 2205, Hodgdon TrailBoss 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. Hodgdon LilGun, Lovex S040, ADI AR 2205 rank at the top here: for .375 Win. with the .375 | 175gr | Lehigh Defense Controlled Fracturing they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.