Load Specifications
Load data in caliber .45 ACP with .350 | 200gr | Sierra Sig V-Crown bullet and 9 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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Alliant Herco² | <<locked>> | 72% | 15,708 psi | 83% | 1001 fps | 95% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 76% | 17,027 psi | 90% | 988 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 12,807 psi | 68% | 853 fps | 100% |
| Maxam CSB 1² | <<locked>> | 64% | 16,897 psi | 90% | 991 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 11,487 psi | 61% | 843 fps | 99.8% |
| ReloadSwiss RS 20² | <<locked>> | 64% | 15,621 psi | 83% | 1020 fps | 97.1% |
| SNPE Vectan A0² | <<locked>> | 64% | 16,694 psi | 89% | 988 fps | 95.5% |
| Vihtavuori N32C Tin Star | <<locked>> | 84% | 16,940 psi | 90% | 928 fps | 100% |
| Vihtavuori N350*² | <<locked>> | 72% | 17,027 psi | 90% | 1047 fps | 89.6% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Alliant Herco*² | <<locked>> | 60% | 11,473 psi | 61% | 873 fps | 89.9% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 11,124 psi | 59% | 846 fps | 99.9% |
| Hodgdon TrailBoss² | 3.8 gr | 60% | 6,048 psi | 32% | 623 fps | 97.1% |
| Maxam CSB 1² | <<locked>> | 60% | 14,808 psi | 79% | 942 fps | 98.8% |
| ReloadSwiss RS 14*² | 3.8 gr | 60% | 5,569 psi | 30% | 604 fps | 91.5% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 13,779 psi | 73% | 968 fps | 95.4% |
| SNPE Vectan A0*² | <<locked>> | 60% | 15,142 psi | 80% | 948 fps | 94.1% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 9,645 psi | 51% | 761 fps | 100% |
| Vihtavuori N350*² | <<locked>> | 68% | 15,258 psi | 81% | 1004 fps | 87.6% |
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 .350 | 200gr | Sierra Sig V-Crown. Vihtavuori N32C Tin Star delivers the highest muzzle velocity at 928 fps; across all powders the maximum-charge window runs from 843 fps to 928 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 61–90 %, leaving at least 10 % 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 .350 | 200gr | Sierra Sig V-Crown 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.