Load Specifications
Load data in caliber .375 Win. with .374 | 235gr | Rhino Penetrator bullet and 18 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 Shooters World SOCOM.
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% | 49,661 psi | 90% | 2021 fps | 97.4% |
| Accurate No. 11 FS | <<locked>> | 96% | 49,182 psi | 89% | 2008 fps | 99.6% |
| ADI AR 2205 | <<locked>> | 98% | 48,689 psi | 88% | 1932 fps | 100% |
| Hodgdon LilGun | <<locked>> | 92% | 46,978 psi | 85% | 2037 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 22,814 psi | 41% | 1125 fps | 100% |
| IMR 4227ᴾ | <<locked>> | 100% | 39,566 psi | 72% | 1893 fps | 97.1% |
| Lovex D060 | <<locked>> | 98% | 48,457 psi | 88% | 2008 fps | 97.2% |
| Lovex D063 | <<locked>> | 94% | 48,573 psi | 88% | 2001 fps | 97.2% |
| Lovex S040 | <<locked>> | 90% | 47,616 psi | 86% | 1916 fps | 100% |
| Lovex S053ᴾ | <<locked>> | 100% | 35,766 psi | 65% | 1867 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 20,465 psi | 37% | 1138 fps | 100% |
| ReloadSwiss RS 36ᴾ | <<locked>> | 100% | 36,811 psi | 67% | 1903 fps | 96.4% |
| Shooters World Blackout | <<locked>> | 94% | 48,573 psi | 88% | 2001 fps | 97.2% |
| Shooters World Buffalo Rifle | <<locked>> | 98% | 48,457 psi | 88% | 2008 fps | 97.2% |
| Shooters World SOCOM | <<locked>> | 98% | 49,342 psi | 90% | 1995 fps | 97.8% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 33,475 psi | 61% | 1752 fps | 100% |
| Vihtavuori N110ᴾ | <<locked>> | 100% | 43,134 psi | 78% | 1919 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 28,021 psi | 51% | 1781 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 5744 | <<locked>> | 86% | 40,234 psi | 73% | 1900 fps | 95.4% |
| Accurate No. 11 FS | 22.2 gr | 80% | 27,079 psi | 49% | 1703 fps | 95.1% |
| ADI AR 2205 | <<locked>> | 80% | 26,658 psi | 48% | 1634 fps | 96.9% |
| Hodgdon LilGun | 22.4 gr | 80% | 29,370 psi | 53% | 1821 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 15,461 psi | 28% | 997 fps | 100% |
| IMR 4227 | <<locked>> | 94% | 32,416 psi | 59% | 1788 fps | 95.1% |
| Lovex D060 | <<locked>> | 92% | 40,234 psi | 73% | 1900 fps | 95.4% |
| Lovex D063 | <<locked>> | 88% | 39,001 psi | 71% | 1883 fps | 95.2% |
| Lovex S040 | <<locked>> | 80% | 34,374 psi | 62% | 1759 fps | 100% |
| Lovex S053 | <<locked>> | 86% | 22,437 psi | 41% | 1627 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 13,663 psi | 25% | 1007 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 98% | 34,040 psi | 62% | 1860 fps | 95.6% |
| Shooters World Blackout | <<locked>> | 88% | 39,001 psi | 71% | 1883 fps | 95.2% |
| Shooters World Buffalo Rifle | <<locked>> | 92% | 40,234 psi | 73% | 1900 fps | 95.4% |
| Shooters World SOCOM | 25.3 gr | 90% | 37,144 psi | 67% | 1847 fps | 95.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 17,912 psi | 33% | 1473 fps | 99.3% |
| Vihtavuori N110 | <<locked>> | 80% | 21,843 psi | 40% | 1604 fps | 99.4% |
| Vihtavuori N120 | <<locked>> | 96% | 24,540 psi | 45% | 1709 fps | 95% |
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 18 powders for .375 Win. loaded with the .374 | 235gr | Rhino Penetrator. Hodgdon LilGun delivers the highest muzzle velocity at 2,037 fps; across all powders the maximum-charge window runs from 1,125 fps to 2,037 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 18 of the 18 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 37–90 %, leaving at least 10 % headroom. The 235.0 gr projectile in 0.374" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. 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, Shooters World SOCOM rank at the top here: for .375 Win. with the .374 | 235gr | Rhino Penetrator 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.