Load Specifications
Load data in caliber .360 Buckhammer with .355 | 250gr | MAKER Solid Copper Expanding 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, Shooters World Buffalo Rifle and Lovex D060.
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: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 98% | 44,541 psi | 89% | 1788 fps | 96.2% |
| Accurate 5744 | <<locked>> | 82% | 44,237 psi | 88% | 1785 fps | 97.4% |
| Accurate No. 11 FS | <<locked>> | 86% | 44,846 psi | 90% | 1785 fps | 99.6% |
| ADI AR 2205 | <<locked>> | 88% | 44,425 psi | 89% | 1719 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 38,058 psi | 76% | 1791 fps | 98.9% |
| Alliant Reloder-7ᴾ | <<locked>> | 100% | 40,886 psi | 82% | 1785 fps | 96.4% |
| Hodgdon LilGun | <<locked>> | 82% | 45,136 psi | 90% | 1814 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 27,572 psi | 55% | 1060 fps | 100% |
| IMR 4227 | <<locked>> | 96% | 44,976 psi | 90% | 1791 fps | 98.8% |
| Lovex D060 | <<locked>> | 88% | 44,237 psi | 88% | 1785 fps | 97.4% |
| Lovex D063 | <<locked>> | 84% | 43,178 psi | 86% | 1768 fps | 97.2% |
| Lovex S053 | <<locked>> | 98% | 45,020 psi | 90% | 1798 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 27,079 psi | 54% | 1086 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 98% | 45,049 psi | 90% | 1831 fps | 98.8% |
| Shooters World Blackout | <<locked>> | 84% | 43,178 psi | 86% | 1768 fps | 97.2% |
| Shooters World Buffalo Rifle | <<locked>> | 88% | 44,237 psi | 88% | 1785 fps | 97.4% |
| Shooters World SOCOM | <<locked>> | 88% | 44,150 psi | 88% | 1775 fps | 97.9% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 43,830 psi | 88% | 1690 fps | 100% |
| Vihtavuori N110 | <<locked>> | 90% | 42,583 psi | 85% | 1719 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 38,609 psi | 77% | 1772 fps | 99.6% |
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>> | 96% | 41,872 psi | 84% | 1759 fps | 95.6% |
| Accurate 5744 | <<locked>> | 80% | 41,655 psi | 83% | 1752 fps | 96.8% |
| Accurate No. 11 FS | <<locked>> | 80% | 36,854 psi | 74% | 1683 fps | 98.7% |
| ADI AR 2205 | <<locked>> | 80% | 35,157 psi | 70% | 1601 fps | 99.4% |
| ADI AR 2207 | <<locked>> | 86% | 25,454 psi | 51% | 1575 fps | 95% |
| Alliant Reloder-7 | <<locked>> | 96% | 36,201 psi | 72% | 1722 fps | 95.1% |
| Hodgdon LilGun | <<locked>> | 80% | 42,322 psi | 85% | 1785 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 20,117 psi | 40% | 945 fps | 100% |
| IMR 4227 | <<locked>> | 82% | 29,718 psi | 59% | 1572 fps | 95.1% |
| Lovex D060 | 18.9 gr | 80% | 35,186 psi | 70% | 1657 fps | 95% |
| Lovex D063 | <<locked>> | 80% | 37,739 psi | 75% | 1696 fps | 95.9% |
| Lovex S053 | <<locked>> | 80% | 27,137 psi | 54% | 1539 fps | 97.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 19,914 psi | 40% | 971 fps | 100% |
| ReloadSwiss RS 36 | 20.7 gr | 84% | 29,820 psi | 60% | 1614 fps | 95% |
| Shooters World Blackout | <<locked>> | 80% | 37,739 psi | 75% | 1696 fps | 95.9% |
| Shooters World Buffalo Rifle | 18.9 gr | 80% | 35,186 psi | 70% | 1657 fps | 95% |
| Shooters World SOCOM | <<locked>> | 80% | 33,794 psi | 68% | 1631 fps | 95.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 25,875 psi | 52% | 1453 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 32,213 psi | 64% | 1591 fps | 100% |
| Vihtavuori N120 | <<locked>> | 82% | 23,047 psi | 46% | 1496 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 20 powders for .360 Buckhammer loaded with the .355 | 250gr | MAKER Solid Copper Expanding. ReloadSwiss RS 36 delivers the highest muzzle velocity at 1,831 fps; across all powders the maximum-charge window runs from 1,060 fps to 1,831 fps. ADI AR 2207 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 54–90 %, leaving at least 10 % headroom. The 250.0 gr projectile in 0.355" calls for a 1:16.5 twist; slower twists will usually not stabilise this weight. ADI AR 2207, Alliant Reloder-7, Hodgdon TrailBoss 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, Shooters World Buffalo Rifle, Lovex D060 rank at the top here: for .360 Buckhammer with the .355 | 250gr | MAKER Solid Copper Expanding 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.