Load Specifications
Load data in caliber .45 ACP with .452 | 200gr | X-TREME RN bullet and 13 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon TrailBoss and ReloadSwiss RS 14.
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 ≥ 60% and propellant combustion ≥ 80%. 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: 5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate Solo 1250² | <<locked>> | 64% | 16,810 psi | 89% | 928 fps | 98.7% |
| Alliant Herco*² | <<locked>> | 76% | 16,810 psi | 89% | 958 fps | 93.9% |
| Alliant UNIQUE*² | <<locked>> | 64% | 16,752 psi | 89% | 958 fps | 93.8% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 76% | 16,041 psi | 85% | 912 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 12,734 psi | 68% | 791 fps | 100% |
| Maxam CSB 1² | <<locked>> | 64% | 15,780 psi | 84% | 899 fps | 98.2% |
| Maxam CSB 2² | <<locked>> | 64% | 16,273 psi | 86% | 945 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 11,850 psi | 63% | 787 fps | 99.3% |
| ReloadSwiss RS 20² | <<locked>> | 68% | 16,476 psi | 87% | 974 fps | 95.9% |
| SNPE Vectan A0*² | <<locked>> | 64% | 16,012 psi | 85% | 906 fps | 92.7% |
| Vihtavuori N32C Tin Star | <<locked>> | 84% | 16,505 psi | 88% | 863 fps | 100% |
| Vihtavuori N340*² | <<locked>> | 64% | 16,810 psi | 89% | 945 fps | 94.2% |
| Winchester AutoComp ² | <<locked>> | 64% | 16,534 psi | 88% | 932 fps | 97.7% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate Solo 1250² | <<locked>> | 60% | 14,881 psi | 79% | 886 fps | 97.6% |
| Alliant Herco*² | <<locked>> | 60% | 11,748 psi | 62% | 814 fps | 87.8% |
| Alliant UNIQUE*² | <<locked>> | 60% | 15,026 psi | 80% | 912 fps | 92.1% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 10,936 psi | 58% | 784 fps | 99.2% |
| Hodgdon TrailBoss² | 3 gr | 60% | 6,991 psi | 37% | 591 fps | 97.4% |
| Maxam CSB 1² | <<locked>> | 60% | 14,475 psi | 77% | 869 fps | 97.3% |
| Maxam CSB 2² | <<locked>> | 60% | 14,518 psi | 77% | 906 fps | 100% |
| ReloadSwiss RS 14*² | 3.1 gr | 60% | 6,875 psi | 36% | 591 fps | 93.2% |
| ReloadSwiss RS 20*² | <<locked>> | 60% | 13,300 psi | 71% | 889 fps | 92.5% |
| SNPE Vectan A0*² | <<locked>> | 60% | 14,388 psi | 76% | 863 fps | 90.9% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 10,211 psi | 54% | 719 fps | 100% |
| Vihtavuori N340*² | <<locked>> | 60% | 15,084 psi | 80% | 902 fps | 92.5% |
| Winchester AutoComp ² | <<locked>> | 60% | 15,026 psi | 80% | 892 fps | 96.7% |
Recommended = one of the top powders for this cartridge and bullet combination.
* not dangerous but load has suboptimal powder burnt with possible characteristics such as extensive muzzle flash or inaccurate loads.
² fill rate low - you might want to consider using a filler to ensure proper ignition.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 3 powders for .45 ACP loaded with the .452 | 200gr | X-TREME RN. Vihtavuori N32C Tin Star delivers the highest muzzle velocity at 863 fps; across all powders the maximum-charge window runs from 787 fps to 863 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 3 of the 3 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (130 MPa), the top charges use 63–88 %, leaving at least 12 % headroom. 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. Hodgdon TrailBoss, ReloadSwiss RS 14 rank at the top here: for .45 ACP with the .452 | 200gr | X-TREME RN they combine a high case fill with complete burn and sit in the upper velocity band. Hodgdon TrailBoss, ReloadSwiss RS 14, Vihtavuori N32C Tin Star 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.