Load Specifications
Load data in caliber .360 Buckhammer with .358 | 225gr | Barnes X S bullet and 17 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 36, IMR 4227 and Lovex S053.
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: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 5744 | <<locked>> | 82% | 44,686 psi | 89% | 1890 fps | 96.3% |
| Accurate No. 11 FS | <<locked>> | 86% | 45,092 psi | 90% | 1886 fps | 99.1% |
| ADI AR 2205 | <<locked>> | 88% | 44,991 psi | 90% | 1821 fps | 99.9% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 38,928 psi | 78% | 1896 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 28,543 psi | 57% | 1132 fps | 100% |
| IMR 4227 | <<locked>> | 96% | 45,078 psi | 90% | 1890 fps | 98% |
| Lovex D060 | <<locked>> | 88% | 44,686 psi | 89% | 1890 fps | 96.3% |
| Lovex D063 | <<locked>> | 84% | 43,381 psi | 87% | 1867 fps | 96.1% |
| Lovex S053 | <<locked>> | 96% | 42,946 psi | 86% | 1870 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 28,224 psi | 56% | 1161 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 96% | 42,989 psi | 86% | 1903 fps | 97.5% |
| Shooters World Blackout | <<locked>> | 84% | 43,381 psi | 87% | 1867 fps | 96.1% |
| Shooters World Buffalo Rifle | <<locked>> | 88% | 44,686 psi | 89% | 1890 fps | 96.3% |
| Shooters World SOCOM | <<locked>> | 88% | 44,237 psi | 88% | 1870 fps | 96.8% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 44,440 psi | 89% | 1798 fps | 100% |
| Vihtavuori N110 | <<locked>> | 90% | 43,830 psi | 88% | 1834 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 39,392 psi | 79% | 1873 fps | 99% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 5744 | <<locked>> | 80% | 41,800 psi | 84% | 1847 fps | 95.6% |
| Accurate No. 11 FS | <<locked>> | 80% | 37,695 psi | 75% | 1785 fps | 97.9% |
| ADI AR 2205 | <<locked>> | 80% | 35,969 psi | 72% | 1699 fps | 98.9% |
| ADI AR 2207 | <<locked>> | 90% | 29,675 psi | 59% | 1736 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 21,451 psi | 43% | 1014 fps | 100% |
| IMR 4227 | 20.6 gr | 86% | 34,287 psi | 69% | 1732 fps | 95.3% |
| Lovex D060 | <<locked>> | 84% | 39,972 psi | 80% | 1818 fps | 95.1% |
| Lovex D063 | <<locked>> | 82% | 41,017 psi | 82% | 1834 fps | 95.5% |
| Lovex S053 | 18.8 gr | 80% | 28,514 psi | 57% | 1637 fps | 97.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 20,929 psi | 42% | 1037 fps | 100% |
| ReloadSwiss RS 36 | 22.4 gr | 88% | 34,577 psi | 69% | 1775 fps | 95.3% |
| Shooters World Blackout | <<locked>> | 82% | 41,017 psi | 82% | 1834 fps | 95.5% |
| Shooters World Buffalo Rifle | <<locked>> | 84% | 39,972 psi | 80% | 1818 fps | 95.1% |
| Shooters World SOCOM | <<locked>> | 84% | 39,160 psi | 78% | 1798 fps | 95.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 27,311 psi | 55% | 1555 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 33,344 psi | 67% | 1693 fps | 100% |
| Vihtavuori N120 | <<locked>> | 86% | 27,151 psi | 54% | 1657 fps | 95.5% |
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 17 powders for .360 Buckhammer loaded with the .358 | 225gr | Barnes X S. ReloadSwiss RS 36 delivers the highest muzzle velocity at 1,903 fps; across all powders the maximum-charge window runs from 1,132 fps to 1,903 fps. ADI AR 2207 gives the best case fill at 100 %, and 17 of the 17 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (345 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 225.0 gr projectile in 0.358" calls for a 1:16.5 twist; slower twists will usually not stabilise this weight. ADI AR 2207, Hodgdon TrailBoss, ReloadSwiss RS 14 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. ReloadSwiss RS 36, IMR 4227, Lovex S053 rank at the top here: for .360 Buckhammer with the .358 | 225gr | Barnes X S 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.