Load Specifications
Load data in caliber .45 Auto Rim with .452 | 195gr | H&N SWC HS 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% | 14,895 psi | 86% | 965 fps | 98.2% |
| Alliant BE-86² | <<locked>> | 64% | 15,011 psi | 86% | 971 fps | 99.6% |
| Alliant Herco* | <<locked>> | 80% | 15,592 psi | 90% | 1014 fps | 93.8% |
| Alliant UNIQUE*² | <<locked>> | 64% | 14,286 psi | 82% | 981 fps | 92.3% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 80% | 15,258 psi | 88% | 971 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 9,921 psi | 57% | 801 fps | 100% |
| Maxam CSB 1² | <<locked>> | 68% | 15,519 psi | 89% | 974 fps | 98.6% |
| Maxam CSB 2² | <<locked>> | 68% | 15,185 psi | 87% | 1007 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 8,456 psi | 49% | 778 fps | 96.8% |
| ReloadSwiss RS 20*² | <<locked>> | 68% | 14,344 psi | 82% | 1001 fps | 94.8% |
| SNPE Vectan A0*² | <<locked>> | 64% | 14,069 psi | 81% | 932 fps | 91.6% |
| Vihtavuori N32C Tin Star | <<locked>> | 88% | 15,040 psi | 86% | 919 fps | 100% |
| Vihtavuori N340*² | <<locked>> | 64% | 14,707 psi | 85% | 974 fps | 93.1% |
| Winchester AutoComp ² | <<locked>> | 64% | 13,967 psi | 80% | 951 fps | 96.6% |
Start Load - Barrel Length: 5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate Solo 1250² | <<locked>> | 60% | 13,111 psi | 75% | 919 fps | 96.9% |
| Alliant BE-86² | <<locked>> | 60% | 13,024 psi | 75% | 922 fps | 98.7% |
| Alliant Herco*² | <<locked>> | 64% | 10,037 psi | 58% | 846 fps | 85.9% |
| Alliant UNIQUE*² | <<locked>> | 60% | 12,343 psi | 71% | 925 fps | 89.8% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 8,311 psi | 48% | 778 fps | 97.1% |
| Hodgdon TrailBoss*² | <<locked>> | 60% | 4,047 psi | 23% | 554 fps | 89.4% |
| Maxam CSB 1² | <<locked>> | 60% | 12,154 psi | 70% | 886 fps | 96% |
| Maxam CSB 2² | <<locked>> | 60% | 11,705 psi | 67% | 919 fps | 99.4% |
| ReloadSwiss RS 14*² | <<locked>> | 72% | 4,801 psi | 28% | 610 fps | 87.3% |
| ReloadSwiss RS 20*² | <<locked>> | 60% | 11,110 psi | 64% | 899 fps | 90.2% |
| SNPE Vectan A0*² | <<locked>> | 60% | 12,560 psi | 72% | 889 fps | 89.6% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 6,962 psi | 40% | 705 fps | 99.9% |
| Vihtavuori N340*² | <<locked>> | 60% | 12,705 psi | 73% | 919 fps | 90.7% |
| Winchester AutoComp *² | <<locked>> | 60% | 12,183 psi | 70% | 902 fps | 94.8% |
* 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 | 195gr | H&N SWC HS. Vihtavuori N32C Tin Star delivers the highest muzzle velocity at 919 fps; across all powders the maximum-charge window runs from 778 fps to 919 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 49–86 %, 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. 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.