Load Specifications
Load data in caliber .375 Win. with .375 | 200gr | Frontier PH HPBT bullet and 11 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon LilGun, Accurate No. 11 FS 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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 22"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 11 FS | <<locked>> | 94% | 48,109 psi | 87% | 2169 fps | 98.4% |
| ADI AR 2205 | <<locked>> | 96% | 48,269 psi | 88% | 2096 fps | 99.5% |
| Hodgdon LilGun | <<locked>> | 90% | 47,384 psi | 86% | 2224 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 25,991 psi | 47% | 1260 fps | 100% |
| IMR 4227ᴾ | <<locked>> | 100% | 42,061 psi | 76% | 2083 fps | 95.7% |
| Lovex S040 | <<locked>> | 88% | 47,166 psi | 86% | 2083 fps | 100% |
| Lovex S053ᴾ | <<locked>> | 100% | 39,204 psi | 71% | 2067 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 24,845 psi | 45% | 1283 fps | 100% |
| Shooters World SOCOM | <<locked>> | 96% | 48,066 psi | 87% | 2149 fps | 95.8% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 36,477 psi | 66% | 1946 fps | 100% |
| Vihtavuori N110ᴾ | <<locked>> | 100% | 46,659 psi | 85% | 2129 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 | 24.3 gr | 82% | 32,880 psi | 60% | 1939 fps | 95% |
| ADI AR 2205 | 21.8 gr | 80% | 30,023 psi | 54% | 1814 fps | 96.1% |
| Hodgdon LilGun | 23.8 gr | 80% | 33,605 psi | 61% | 2034 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 18,681 psi | 34% | 1119 fps | 100% |
| IMR 4227 | <<locked>> | 98% | 39,798 psi | 72% | 2047 fps | 95.1% |
| Lovex S040 | <<locked>> | 80% | 37,144 psi | 67% | 1949 fps | 100% |
| Lovex S053 | <<locked>> | 88% | 27,978 psi | 51% | 1860 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 18,260 psi | 33% | 1148 fps | 100% |
| Shooters World SOCOM | <<locked>> | 94% | 45,005 psi | 82% | 2106 fps | 95.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 21,625 psi | 39% | 1660 fps | 99.1% |
| Vihtavuori N110 | <<locked>> | 80% | 26,266 psi | 48% | 1808 fps | 99.2% |
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 11 powders for .375 Win. loaded with the .375 | 200gr | Frontier PH HPBT. Hodgdon LilGun delivers the highest muzzle velocity at 2,224 fps; across all powders the maximum-charge window runs from 1,260 fps to 2,224 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 11 of the 11 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 45–88 %, leaving at least 12 % headroom. Hodgdon TrailBoss, IMR 4227, Lovex S053 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, Accurate No. 11 FS, ADI AR 2205 rank at the top here: for .375 Win. with the .375 | 200gr | Frontier PH HPBT 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.