Load Specifications
Load data in caliber .45 ACP with .452 | 200gr | X-TREME X-DEF HP bullet and 13 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N32C Tin Star, 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% | 16,534 psi | 88% | 922 fps | 98.5% |
| Alliant Herco*² | <<locked>> | 76% | 16,665 psi | 88% | 951 fps | 93.7% |
| Alliant UNIQUE*² | <<locked>> | 64% | 16,491 psi | 87% | 948 fps | 93.4% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 76% | 15,853 psi | 84% | 906 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 12,473 psi | 66% | 784 fps | 100% |
| Maxam CSB 1² | <<locked>> | 64% | 15,548 psi | 82% | 892 fps | 97.9% |
| Maxam CSB 2² | <<locked>> | 64% | 16,012 psi | 85% | 938 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 11,661 psi | 62% | 781 fps | 99.1% |
| ReloadSwiss RS 20² | <<locked>> | 68% | 16,317 psi | 87% | 968 fps | 95.6% |
| SNPE Vectan A0*² | <<locked>> | 64% | 15,867 psi | 84% | 896 fps | 92.4% |
| Vihtavuori N32C Tin Star | <<locked>> | 84% | 16,288 psi | 86% | 860 fps | 100% |
| Vihtavuori N340*² | <<locked>> | 64% | 16,592 psi | 88% | 935 fps | 93.8% |
| Winchester AutoComp ² | <<locked>> | 64% | 16,375 psi | 87% | 925 fps | 97.5% |
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% | 14,634 psi | 78% | 876 fps | 97.3% |
| Alliant Herco*² | <<locked>> | 60% | 11,589 psi | 61% | 804 fps | 87.4% |
| Alliant UNIQUE*² | <<locked>> | 60% | 14,852 psi | 79% | 902 fps | 91.7% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 10,747 psi | 57% | 774 fps | 99% |
| Hodgdon TrailBoss² | 3 gr | 60% | 7,020 psi | 37% | 591 fps | 97.3% |
| Maxam CSB 1² | <<locked>> | 60% | 14,243 psi | 76% | 860 fps | 97.1% |
| Maxam CSB 2² | <<locked>> | 60% | 14,243 psi | 76% | 896 fps | 99.9% |
| ReloadSwiss RS 14*² | 3 gr | 60% | 6,701 psi | 36% | 581 fps | 92.7% |
| ReloadSwiss RS 20*² | <<locked>> | 60% | 13,155 psi | 70% | 883 fps | 92.2% |
| SNPE Vectan A0*² | <<locked>> | 60% | 14,185 psi | 75% | 853 fps | 90.5% |
| Vihtavuori N32C Tin Star² | 4 gr | 60% | 9,993 psi | 53% | 709 fps | 100% |
| Vihtavuori N340*² | <<locked>> | 60% | 14,881 psi | 79% | 892 fps | 92.2% |
| Winchester AutoComp ² | <<locked>> | 60% | 14,823 psi | 79% | 886 fps | 96.4% |
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 X-DEF HP. Vihtavuori N32C Tin Star delivers the highest muzzle velocity at 860 fps; across all powders the maximum-charge window runs from 781 fps to 860 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 62–86 %, leaving at least 14 % 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. Vihtavuori N32C Tin Star, Hodgdon TrailBoss, ReloadSwiss RS 14 rank at the top here: for .45 ACP with the .452 | 200gr | X-TREME X-DEF HP 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.