Load Specifications
Load data in caliber .45 Auto Rim with .452 | 200gr | H&N RN F bullet and 14 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>> | 64% | 15,185 psi | 87% | 961 fps | 98.7% |
| Alliant BE-86² | <<locked>> | 64% | 15,664 psi | 90% | 978 fps | 99.9% |
| Alliant Herco*² | <<locked>> | 76% | 14,721 psi | 85% | 984 fps | 93.5% |
| Alliant UNIQUE*² | <<locked>> | 64% | 14,576 psi | 84% | 978 fps | 93.2% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 76% | 14,272 psi | 82% | 938 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 10,225 psi | 59% | 801 fps | 100% |
| Maxam CSB 1² | <<locked>> | 64% | 14,475 psi | 83% | 938 fps | 98.3% |
| Maxam CSB 2² | <<locked>> | 64% | 13,779 psi | 79% | 961 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 9,007 psi | 52% | 787 fps | 97.9% |
| ReloadSwiss RS 20² | <<locked>> | 68% | 14,997 psi | 86% | 1007 fps | 96% |
| SNPE Vectan A0*² | <<locked>> | 64% | 14,678 psi | 84% | 942 fps | 93% |
| Vihtavuori N32C Tin Star | <<locked>> | 84% | 14,054 psi | 81% | 886 fps | 100% |
| Vihtavuori N340*² | <<locked>> | 64% | 15,389 psi | 88% | 981 fps | 94.4% |
| Winchester AutoComp ² | <<locked>> | 64% | 14,547 psi | 84% | 958 fps | 97.5% |
Start Load - Barrel Length: 5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate Solo 1250² | <<locked>> | 60% | 13,416 psi | 77% | 915 fps | 97.5% |
| Alliant BE-86² | <<locked>> | 60% | 13,663 psi | 79% | 928 fps | 99.3% |
| Alliant Herco*² | <<locked>> | 64% | 10,530 psi | 61% | 856 fps | 87.6% |
| Alliant UNIQUE*² | <<locked>> | 60% | 13,010 psi | 75% | 935 fps | 91.3% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 8,818 psi | 51% | 787 fps | 98.2% |
| Hodgdon TrailBoss*² | <<locked>> | 60% | 4,250 psi | 24% | 558 fps | 91% |
| Maxam CSB 1² | <<locked>> | 60% | 12,836 psi | 74% | 896 fps | 97.1% |
| Maxam CSB 2² | <<locked>> | 60% | 12,082 psi | 69% | 919 fps | 99.7% |
| ReloadSwiss RS 14*² | <<locked>> | 68% | 4,467 psi | 26% | 584 fps | 86.5% |
| ReloadSwiss RS 20*² | <<locked>> | 60% | 11,690 psi | 67% | 912 fps | 92% |
| SNPE Vectan A0*² | <<locked>> | 60% | 13,169 psi | 76% | 899 fps | 91.2% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 7,252 psi | 42% | 709 fps | 100% |
| Vihtavuori N340*² | <<locked>> | 60% | 13,329 psi | 77% | 928 fps | 92.2% |
| Winchester AutoComp ² | <<locked>> | 60% | 12,749 psi | 73% | 909 fps | 96% |
* 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 Auto Rim loaded with the .452 | 200gr | H&N RN F. Vihtavuori N32C Tin Star delivers the highest muzzle velocity at 886 fps; across all powders the maximum-charge window runs from 787 fps to 886 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 (120 MPa), the top charges use 52–81 %, leaving at least 19 % 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.