Load Specifications
Load data in caliber .44 S&W Special with .430 | 240gr | Hornady SWC bullet and 2 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are 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 |
|---|---|---|---|---|---|---|
| Hodgdon TrailBoss | <<locked>> | 84% | 12,778 psi | 88% | 758 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 88% | 12,691 psi | 88% | 781 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Hodgdon TrailBoss² | <<locked>> | 60% | 7,455 psi | 51% | 620 fps | 100% |
| ReloadSwiss RS 14² | 4.8 gr | 60% | 6,788 psi | 47% | 614 fps | 99.3% |
Recommended = one of the top powders for this cartridge and bullet combination.
² fill rate low - you might want to consider using a filler to ensure proper ignition.
This overview compares 2 powders for .44 S&W Special loaded with the .430 | 240gr | Hornady SWC. ReloadSwiss RS 14 delivers the highest muzzle velocity at 781 fps; across all powders the maximum-charge window runs from 758 fps to 781 fps. ReloadSwiss RS 14 gives the best case fill at 88 %, and 2 of the 2 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (100 MPa), the top charges use 88–88 %, leaving at least 12 % headroom. ReloadSwiss RS 14 rank at the top here: for .44 S&W Special with the .430 | 240gr | Hornady SWC they combine a high case fill with complete burn and sit in the upper velocity band. Hodgdon TrailBoss, ReloadSwiss RS 14 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.