Load Specifications
Load data in caliber .32 H&R Mag. with .314 | 100gr | H&N RN F bullet and 16 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N32C Tin Star, 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.
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Max Load - Barrel Length: 4"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate Solo 1250² | <<locked>> | 64% | 17,579 psi | 87% | 938 fps | 99.4% |
| Alliant Herco² | <<locked>> | 76% | 17,158 psi | 85% | 961 fps | 95% |
| Alliant UNIQUE² | <<locked>> | 64% | 17,318 psi | 85% | 965 fps | 95.1% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 76% | 16,926 psi | 83% | 915 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 12,140 psi | 60% | 784 fps | 100% |
| Maxam CSB 1² | <<locked>> | 64% | 16,752 psi | 83% | 919 fps | 99.2% |
| Maxam CSB 2² | <<locked>> | 64% | 17,027 psi | 84% | 948 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 10,167 psi | 50% | 755 fps | 98.4% |
| ReloadSwiss RS 20² | <<locked>> | 68% | 17,811 psi | 88% | 991 fps | 97.5% |
| SNPE Vectan A0*² | <<locked>> | 64% | 17,129 psi | 84% | 928 fps | 94.9% |
| Somchem MS200² | <<locked>> | 64% | 18,333 psi | 90% | 965 fps | 96.8% |
| Vihtavuori 3N37*² | <<locked>> | 68% | 17,782 psi | 88% | 988 fps | 88.4% |
| Vihtavuori N32C Tin Star | <<locked>> | 84% | 16,520 psi | 81% | 863 fps | 100% |
| Vihtavuori N340² | <<locked>> | 64% | 18,159 psi | 89% | 968 fps | 96.1% |
| Vihtavuori N350*² | <<locked>> | 72% | 16,868 psi | 83% | 965 fps | 87.8% |
| Winchester AutoComp ² | <<locked>> | 64% | 16,621 psi | 82% | 928 fps | 98.3% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 4"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate Solo 1250² | <<locked>> | 60% | 15,635 psi | 77% | 896 fps | 98.6% |
| Alliant Herco*² | <<locked>> | 60% | 10,414 psi | 51% | 778 fps | 86.2% |
| Alliant UNIQUE*² | <<locked>> | 60% | 14,750 psi | 73% | 906 fps | 92.6% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 10,211 psi | 50% | 761 fps | 98.8% |
| Hodgdon TrailBoss*² | 1.9 gr | 60% | 5,149 psi | 25% | 554 fps | 93.2% |
| Maxam CSB 1² | <<locked>> | 60% | 14,968 psi | 74% | 879 fps | 98.3% |
| Maxam CSB 2² | <<locked>> | 60% | 14,228 psi | 70% | 889 fps | 100% |
| ReloadSwiss RS 14*² | 2 gr | 64% | 4,815 psi | 24% | 545 fps | 86.5% |
| ReloadSwiss RS 20*² | <<locked>> | 60% | 13,648 psi | 67% | 892 fps | 93.8% |
| SNPE Vectan A0*² | <<locked>> | 60% | 14,649 psi | 72% | 869 fps | 92.4% |
| Somchem MS200² | <<locked>> | 60% | 16,534 psi | 81% | 925 fps | 95.5% |
| Vihtavuori 3N37*² | <<locked>> | 64% | 15,447 psi | 76% | 932 fps | 85.6% |
| Vihtavuori N32C Tin Star² | 2.5 gr | 60% | 8,702 psi | 43% | 689 fps | 100% |
| Vihtavuori N340*² | <<locked>> | 60% | 15,490 psi | 76% | 909 fps | 93.9% |
| Vihtavuori N350*² | <<locked>> | 68% | 15,302 psi | 75% | 925 fps | 85.9% |
| Winchester AutoComp ² | <<locked>> | 60% | 15,069 psi | 74% | 892 fps | 97.4% |
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 16 powders for .32 H&R Mag. loaded with the .314 | 100gr | H&N RN F. ReloadSwiss RS 20 delivers the highest muzzle velocity at 991 fps; across all powders the maximum-charge window runs from 755 fps to 991 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 3 of the 16 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (140 MPa), the top charges use 50–90 %, 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. Vihtavuori N32C Tin Star, Hodgdon TrailBoss, ReloadSwiss RS 14 rank at the top here: for .32 H&R Mag. with the .314 | 100gr | H&N RN F they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, SNPE Vectan A0, Vihtavuori 3N37, Vihtavuori N350 burn incompletely and react more sensitively to barrel length and temperature. Accurate Solo 1250, Alliant Herco, Alliant UNIQUE 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.