Load Specifications
Load data in caliber .45 ACP with .452 | 250gr | Rim Rock RNFP BP Lube bullet and 22 powders. The key underlying parameters are shown in the table above.
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>> | 68% | 17,056 psi | 90% | 804 fps | 99.5% |
| Alliant BE-86² | <<locked>> | 68% | 16,998 psi | 90% | 807 fps | 100% |
| Alliant Herco | <<locked>> | 80% | 16,041 psi | 85% | 817 fps | 95.2% |
| Alliant UNIQUE² | <<locked>> | 68% | 16,230 psi | 86% | 820 fps | 95.2% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 80% | 15,606 psi | 83% | 778 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 64% | 16,520 psi | 88% | 801 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 10,573 psi | 56% | 643 fps | 100% |
| Lovex S020² | <<locked>> | 64% | 16,810 psi | 89% | 817 fps | 97.6% |
| Maxam CSB 1² | <<locked>> | 68% | 15,679 psi | 83% | 774 fps | 99.1% |
| Maxam CSB 2² | <<locked>> | 68% | 15,287 psi | 81% | 801 fps | 100% |
| Maxam CSB 3² | <<locked>> | 64% | 16,520 psi | 88% | 778 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 9,558 psi | 51% | 636 fps | 98.7% |
| ReloadSwiss RS 20² | <<locked>> | 72% | 16,418 psi | 87% | 843 fps | 97.5% |
| SNPE Vectan A0*² | <<locked>> | 68% | 16,041 psi | 85% | 778 fps | 94.5% |
| SNPE Vectan BA9 1/2² | <<locked>> | 64% | 16,650 psi | 88% | 797 fps | 99.3% |
| Somchem MS200² | <<locked>> | 64% | 16,099 psi | 85% | 791 fps | 95.9% |
| Vihtavuori 3N37*² | <<locked>> | 72% | 16,099 psi | 85% | 830 fps | 87.8% |
| Vihtavuori N32C Tin Star | <<locked>> | 92% | 16,766 psi | 89% | 748 fps | 100% |
| Vihtavuori N330² | <<locked>> | 64% | 16,621 psi | 88% | 827 fps | 100% |
| Vihtavuori N340² | <<locked>> | 68% | 16,969 psi | 90% | 817 fps | 96% |
| Vihtavuori N350*² | <<locked>> | 76% | 15,737 psi | 83% | 820 fps | 87.7% |
| Winchester AutoComp ² | <<locked>> | 68% | 16,041 psi | 85% | 797 fps | 98.6% |
Start Load - Barrel Length: 5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate Solo 1250² | <<locked>> | 60% | 13,358 psi | 71% | 732 fps | 97.8% |
| Alliant BE-86² | <<locked>> | 60% | 13,706 psi | 73% | 745 fps | 99.5% |
| Alliant Herco*² | <<locked>> | 60% | 9,732 psi | 52% | 659 fps | 86.7% |
| Alliant UNIQUE*² | <<locked>> | 60% | 13,053 psi | 69% | 748 fps | 91.9% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 9,123 psi | 48% | 640 fps | 98.9% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 14,794 psi | 78% | 768 fps | 98.4% |
| Hodgdon TrailBoss*² | <<locked>> | 60% | 5,134 psi | 27% | 466 fps | 94.8% |
| Lovex S020² | <<locked>> | 60% | 14,968 psi | 79% | 781 fps | 96.3% |
| Maxam CSB 1² | <<locked>> | 60% | 12,415 psi | 66% | 705 fps | 97% |
| Maxam CSB 2² | <<locked>> | 60% | 12,444 psi | 66% | 745 fps | 99.9% |
| Maxam CSB 3² | <<locked>> | 60% | 14,605 psi | 77% | 745 fps | 100% |
| ReloadSwiss RS 14*² | <<locked>> | 60% | 4,960 psi | 26% | 463 fps | 89.4% |
| ReloadSwiss RS 20*² | <<locked>> | 60% | 11,473 psi | 61% | 725 fps | 92.2% |
| SNPE Vectan A0*² | <<locked>> | 60% | 12,937 psi | 69% | 712 fps | 91.1% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 14,881 psi | 79% | 761 fps | 98.5% |
| Somchem MS200*² | <<locked>> | 60% | 14,402 psi | 76% | 758 fps | 94.4% |
| Vihtavuori 3N37*² | <<locked>> | 68% | 14,634 psi | 78% | 801 fps | 86.1% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 8,122 psi | 43% | 581 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 14,156 psi | 75% | 781 fps | 99.4% |
| Vihtavuori N340*² | <<locked>> | 60% | 13,039 psi | 69% | 738 fps | 92.3% |
| Vihtavuori N350*² | <<locked>> | 72% | 14,272 psi | 76% | 787 fps | 85.8% |
| Winchester AutoComp ² | <<locked>> | 60% | 13,111 psi | 70% | 735 fps | 96.7% |
* 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 | 250gr | Rim Rock RNFP BP Lube. Vihtavuori N32C Tin Star delivers the highest muzzle velocity at 748 fps; across all powders the maximum-charge window runs from 636 fps to 748 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 51–89 %, leaving at least 11 % 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, 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.