Load Specifications
Load data in caliber .360 Buckhammer with .358 | 250gr | Swift A-Frame bullet and 20 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 36, ADI AR 2207 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 1680 | <<locked>> | 96% | 44,599 psi | 89% | 1831 fps | 97% |
| Accurate No. 11 FS | <<locked>> | 84% | 45,020 psi | 90% | 1821 fps | 99.9% |
| ADI AR 2205 | <<locked>> | 86% | 44,135 psi | 88% | 1749 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 41,075 psi | 82% | 1867 fps | 99.6% |
| Alliant Reloder-7ᴾ | <<locked>> | 100% | 44,121 psi | 88% | 1864 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 28,413 psi | 57% | 1093 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 38,377 psi | 77% | 1781 fps | 96.7% |
| IMR 4227 | <<locked>> | 94% | 45,150 psi | 90% | 1831 fps | 99.3% |
| Lovex D060 | <<locked>> | 86% | 44,222 psi | 88% | 1824 fps | 98% |
| Lovex D063 | <<locked>> | 86% | 43,932 psi | 88% | 1808 fps | 98.4% |
| Lovex S053 | <<locked>> | 94% | 42,888 psi | 86% | 1804 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 37,652 psi | 75% | 1831 fps | 96.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 27,905 psi | 56% | 1119 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 94% | 43,453 psi | 87% | 1847 fps | 99% |
| Shooters World Blackout | <<locked>> | 82% | 43,366 psi | 87% | 1811 fps | 97.9% |
| Shooters World Buffalo Rifle | <<locked>> | 86% | 44,222 psi | 88% | 1824 fps | 98% |
| Shooters World SOCOM | <<locked>> | 86% | 43,932 psi | 88% | 1808 fps | 98.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 98% | 44,092 psi | 88% | 1719 fps | 100% |
| Vihtavuori N110 | <<locked>> | 88% | 43,294 psi | 87% | 1755 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 41,452 psi | 83% | 1841 fps | 100% |
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 1680 | <<locked>> | 90% | 36,782 psi | 74% | 1729 fps | 95.1% |
| Accurate No. 11 FS | <<locked>> | 80% | 39,320 psi | 79% | 1752 fps | 99.4% |
| ADI AR 2205 | <<locked>> | 80% | 37,217 psi | 74% | 1663 fps | 99.9% |
| ADI AR 2207 | 20.9 gr | 82% | 24,178 psi | 48% | 1575 fps | 95.1% |
| Alliant Reloder-7 | <<locked>> | 92% | 34,809 psi | 70% | 1736 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 20,900 psi | 42% | 978 fps | 100% |
| IMR 4198 | <<locked>> | 96% | 34,389 psi | 69% | 1716 fps | 95.4% |
| IMR 4227 | <<locked>> | 80% | 29,936 psi | 60% | 1608 fps | 96% |
| Lovex D060 | <<locked>> | 80% | 37,318 psi | 75% | 1726 fps | 96.4% |
| Lovex D063 | <<locked>> | 80% | 36,245 psi | 72% | 1706 fps | 96.9% |
| Lovex S053 | 19.6 gr | 80% | 29,022 psi | 58% | 1601 fps | 98.8% |
| Norma 200 | <<locked>> | 96% | 33,214 psi | 66% | 1762 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 20,276 psi | 41% | 997 fps | 100% |
| ReloadSwiss RS 36 | 21.2 gr | 80% | 28,195 psi | 56% | 1614 fps | 95.1% |
| Shooters World Blackout | <<locked>> | 80% | 40,495 psi | 81% | 1772 fps | 97.3% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 37,318 psi | 75% | 1726 fps | 96.4% |
| Shooters World SOCOM | <<locked>> | 80% | 36,245 psi | 72% | 1706 fps | 96.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 27,615 psi | 55% | 1506 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 34,229 psi | 68% | 1647 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 23,279 psi | 47% | 1532 fps | 95.9% |
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 27 powders for .360 Buckhammer loaded with the .358 | 250gr | Swift A-Frame. ADI AR 2207 delivers the highest muzzle velocity at 1,867 fps; across all powders the maximum-charge window runs from 1,093 fps to 1,867 fps. Accurate LT-30 gives the best case fill at 100 %, and 27 of the 27 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 250.0 gr projectile in 0.358" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate LT-30, ADI AR 2207, Alliant AR-Comp 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, ADI AR 2207, Lovex S053 rank at the top here: for .360 Buckhammer with the .358 | 250gr | Swift A-Frame they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate LT-30, Alliant AR-Comp, Alliant Reloder-10x burn incompletely and react more sensitively to barrel length and temperature. 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.