Load Specifications
Load data in caliber .32 Short Colt with .312 | 90gr | Sierra Sports Master bullet and 13 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: 3"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate Solo 1000*² | <<locked>> | 68% | 11,966 psi | 83% | 610 fps | 89.1% |
| ADI AS 30² | <<locked>> | 72% | 12,763 psi | 88% | 640 fps | 96% |
| ADI AS 50N*² | <<locked>> | 68% | 12,256 psi | 85% | 636 fps | 88.7% |
| Alliant Green Dot*² | <<locked>> | 72% | 12,125 psi | 84% | 633 fps | 88.7% |
| Alliant RED DOT*² | <<locked>> | 76% | 12,372 psi | 85% | 646 fps | 94.9% |
| Baschieri & Pellagri 102 Pistol*ᴾ | <<locked>> | 100% | 11,763 psi | 81% | 653 fps | 88.3% |
| Hodgdon Clays² | <<locked>> | 72% | 12,517 psi | 86% | 607 fps | 99.1% |
| Maxam CSB 4*² | <<locked>> | 72% | 11,589 psi | 80% | 627 fps | 89.3% |
| Maxam CSB 5² | <<locked>> | 68% | 12,198 psi | 84% | 643 fps | 97.8% |
| ReloadSwiss RS 12* | <<locked>> | 84% | 13,039 psi | 90% | 728 fps | 93.2% |
| Rottweil P 801*² | <<locked>> | 72% | 12,038 psi | 83% | 686 fps | 94.8% |
| Vihtavuori N320*² | <<locked>> | 76% | 12,560 psi | 87% | 673 fps | 91% |
| Vihtavuori N32C Tin Star*ᴾ | <<locked>> | 100% | 9,050 psi | 62% | 591 fps | 94.6% |
Start Load - Barrel Length: 3"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate Solo 1000*² | <<locked>> | 60% | 10,399 psi | 72% | 574 fps | 86.5% |
| ADI AS 30*² | <<locked>> | 60% | 9,485 psi | 65% | 561 fps | 91.4% |
| ADI AS 50N*² | <<locked>> | 64% | 10,718 psi | 74% | 597 fps | 86.2% |
| Alliant Green Dot*² | <<locked>> | 64% | 10,631 psi | 73% | 597 fps | 86.1% |
| Alliant RED DOT*² | <<locked>> | 60% | 9,195 psi | 63% | 568 fps | 90% |
| Baschieri & Pellagri 102 Pistol* | <<locked>> | 92% | 10,530 psi | 73% | 623 fps | 86% |
| Hodgdon Clays² | <<locked>> | 60% | 9,123 psi | 63% | 528 fps | 96% |
| Maxam CSB 4*² | <<locked>> | 64% | 10,066 psi | 69% | 591 fps | 86.6% |
| Maxam CSB 5² | <<locked>> | 60% | 10,486 psi | 72% | 604 fps | 96% |
| ReloadSwiss RS 12*² | <<locked>> | 68% | 8,978 psi | 62% | 620 fps | 85.6% |
| Rottweil P 801*² | <<locked>> | 60% | 9,253 psi | 64% | 617 fps | 90.5% |
| Vihtavuori N320*² | <<locked>> | 68% | 9,616 psi | 66% | 597 fps | 85.6% |
| Vihtavuori N32C Tin Star* | <<locked>> | 80% | 6,280 psi | 43% | 495 fps | 87% |
* 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 13 powders for .32 Short Colt loaded with the .312 | 90gr | Sierra Sports Master. ReloadSwiss RS 12 delivers the highest muzzle velocity at 728 fps; across all powders the maximum-charge window runs from 591 fps to 728 fps. Baschieri & Pellagri 102 Pistol gives the best case fill at 100 %, and 3 of the 13 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (100 MPa), the top charges use 62–90 %, leaving at least 10 % headroom. Baschieri & Pellagri 102 Pistol, Vihtavuori N32C Tin Star 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. As outliers, Accurate Solo 1000, ADI AS 50N, Alliant Green Dot burn incompletely and react more sensitively to barrel length and temperature. Accurate Solo 1000, ADI AS 30, ADI AS 50N 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.