Load Specifications
Load data in caliber .360 Buckhammer with .358 | 250gr | Norma ORYX 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 Alliant Reloder-7.
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>> | 92% | 43,062 psi | 86% | 1860 fps | 97.6% |
| ADI AR 2205 | <<locked>> | 84% | 44,889 psi | 90% | 1801 fps | 100% |
| ADI AR 2207 | <<locked>> | 98% | 43,004 psi | 86% | 1932 fps | 100% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 37,231 psi | 74% | 1873 fps | 96.7% |
| Alliant Reloder-7 | <<locked>> | 96% | 43,294 psi | 87% | 1900 fps | 98.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 29,124 psi | 58% | 1132 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 41,466 psi | 83% | 1873 fps | 98.3% |
| IMR 4227 | <<locked>> | 90% | 43,439 psi | 87% | 1854 fps | 99.5% |
| Lovex D060 | <<locked>> | 84% | 45,078 psi | 90% | 1883 fps | 98.8% |
| Lovex D063 | <<locked>> | 84% | 44,570 psi | 89% | 1864 fps | 99.1% |
| Lovex S053 | <<locked>> | 92% | 44,411 psi | 89% | 1864 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 42,467 psi | 85% | 1939 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 28,616 psi | 57% | 1158 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 92% | 44,831 psi | 90% | 1909 fps | 99.6% |
| Shooters World Buffalo Rifle | <<locked>> | 84% | 45,078 psi | 90% | 1883 fps | 98.8% |
| Shooters World SOCOM | <<locked>> | 84% | 44,570 psi | 89% | 1864 fps | 99.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 94% | 43,134 psi | 86% | 1745 fps | 100% |
| Vihtavuori N110 | <<locked>> | 86% | 44,251 psi | 89% | 1804 fps | 100% |
| Vihtavuori N120 | <<locked>> | 98% | 43,294 psi | 87% | 1903 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 36,767 psi | 74% | 1811 fps | 96% |
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>> | 84% | 33,257 psi | 67% | 1719 fps | 95% |
| ADI AR 2205 | <<locked>> | 80% | 39,653 psi | 79% | 1736 fps | 100% |
| ADI AR 2207 | 22.4 gr | 80% | 24,947 psi | 50% | 1631 fps | 96.4% |
| Alliant Reloder-10x | <<locked>> | 96% | 33,083 psi | 66% | 1804 fps | 95.4% |
| Alliant Reloder-7 | 25 gr | 86% | 32,068 psi | 64% | 1732 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 21,393 psi | 43% | 1010 fps | 100% |
| IMR 4198 | <<locked>> | 90% | 31,589 psi | 63% | 1716 fps | 95.5% |
| IMR 4227 | <<locked>> | 80% | 32,489 psi | 65% | 1693 fps | 97.6% |
| Lovex D060 | <<locked>> | 80% | 39,885 psi | 80% | 1811 fps | 97.9% |
| Lovex D063 | <<locked>> | 80% | 39,407 psi | 79% | 1795 fps | 98.3% |
| Lovex S053 | <<locked>> | 80% | 31,401 psi | 63% | 1680 fps | 99.6% |
| Norma 200 | <<locked>> | 90% | 31,024 psi | 62% | 1762 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 20,784 psi | 42% | 1030 fps | 100% |
| ReloadSwiss RS 36 | 23.4 gr | 80% | 31,169 psi | 62% | 1709 fps | 97.1% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 39,885 psi | 80% | 1811 fps | 97.9% |
| Shooters World SOCOM | <<locked>> | 80% | 39,407 psi | 79% | 1795 fps | 98.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 29,994 psi | 60% | 1575 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 37,463 psi | 75% | 1722 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 25,367 psi | 51% | 1617 fps | 97.8% |
| Vihtavuori N130 | <<locked>> | 98% | 34,606 psi | 69% | 1778 fps | 95.4% |
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 20 powders for .360 Buckhammer loaded with the .358 | 250gr | Norma ORYX. Norma 200 delivers the highest muzzle velocity at 1,939 fps; across all powders the maximum-charge window runs from 1,132 fps to 1,939 fps. Alliant Reloder-10x gives the best case fill at 100 %, and 20 of the 20 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (345 MPa), the top charges use 57–90 %, 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. Alliant Reloder-10x, Hodgdon TrailBoss, IMR 4198 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, Alliant Reloder-7 rank at the top here: for .360 Buckhammer with the .358 | 250gr | Norma ORYX 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.