Load Specifications
Load data in caliber .32 H&R Mag. with .311 | 71gr | Prvi Partizan JHP-RN bullet and 19 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 and Hodgdon TrailBoss.
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>> | 68% | 17,840 psi | 88% | 1138 fps | 96.6% |
| Alliant BE-86² | <<locked>> | 64% | 16,534 psi | 81% | 1106 fps | 97.8% |
| Alliant Herco* | <<locked>> | 80% | 17,434 psi | 86% | 1152 fps | 90% |
| Alliant UNIQUE*² | <<locked>> | 68% | 18,144 psi | 89% | 1178 fps | 90.6% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 80% | 17,245 psi | 85% | 1122 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 11,385 psi | 56% | 925 fps | 99.1% |
| Lovex S020*² | <<locked>> | 64% | 18,231 psi | 90% | 1165 fps | 93.4% |
| Maxam CSB 1² | <<locked>> | 68% | 17,027 psi | 84% | 1115 fps | 96.2% |
| Maxam CSB 2² | <<locked>> | 68% | 17,085 psi | 84% | 1155 fps | 99.5% |
| Maxam CSB 3² | <<locked>> | 64% | 17,347 psi | 85% | 1115 fps | 99.1% |
| ReloadSwiss RS 14*ᴾ | <<locked>> | 100% | 10,399 psi | 51% | 906 fps | 94.9% |
| ReloadSwiss RS 20*² | <<locked>> | 72% | 17,709 psi | 87% | 1188 fps | 92.7% |
| SNPE Vectan A0*² | <<locked>> | 68% | 17,071 psi | 84% | 1109 fps | 89.6% |
| SNPE Vectan BA9 1/2² | <<locked>> | 64% | 18,159 psi | 89% | 1148 fps | 96.6% |
| Somchem MS200*² | <<locked>> | 64% | 16,868 psi | 83% | 1115 fps | 90.8% |
| Vihtavuori N32C Tin Star | <<locked>> | 88% | 17,013 psi | 84% | 1070 fps | 100% |
| Vihtavuori N330² | <<locked>> | 64% | 18,057 psi | 89% | 1178 fps | 98% |
| Vihtavuori N340*² | <<locked>> | 64% | 16,288 psi | 80% | 1109 fps | 89.2% |
| Winchester AutoComp ² | <<locked>> | 68% | 17,811 psi | 88% | 1145 fps | 95.4% |
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 1250*² | <<locked>> | 60% | 13,996 psi | 69% | 1033 fps | 93.2% |
| Alliant BE-86² | <<locked>> | 60% | 14,533 psi | 72% | 1050 fps | 96.3% |
| Alliant Herco*² | <<locked>> | 72% | 14,388 psi | 71% | 1063 fps | 86.3% |
| Alliant UNIQUE*² | <<locked>> | 60% | 13,996 psi | 69% | 1053 fps | 85.6% |
| Baschieri & Pellagri 102 Pistol*² | <<locked>> | 60% | 10,008 psi | 49% | 906 fps | 94.9% |
| Hodgdon TrailBoss*² | 2.1 gr | 60% | 5,642 psi | 28% | 673 fps | 89.6% |
| Lovex S020*² | <<locked>> | 60% | 15,896 psi | 78% | 1102 fps | 91.1% |
| Maxam CSB 1*² | <<locked>> | 60% | 13,474 psi | 66% | 1014 fps | 92.7% |
| Maxam CSB 2² | <<locked>> | 60% | 13,387 psi | 66% | 1047 fps | 97.3% |
| Maxam CSB 3² | <<locked>> | 60% | 15,751 psi | 78% | 1073 fps | 98.4% |
| ReloadSwiss RS 14*² | <<locked>> | 68% | 6,048 psi | 30% | 705 fps | 85.2% |
| ReloadSwiss RS 20*² | <<locked>> | 60% | 12,502 psi | 62% | 1020 fps | 85.4% |
| SNPE Vectan A0*² | <<locked>> | 60% | 13,721 psi | 68% | 1010 fps | 85.4% |
| SNPE Vectan BA9 1/2*² | <<locked>> | 60% | 15,896 psi | 78% | 1086 fps | 94.7% |
| Somchem MS200*² | <<locked>> | 60% | 15,461 psi | 76% | 1076 fps | 89.2% |
| Vihtavuori N32C Tin Star² | 2.8 gr | 60% | 8,760 psi | 43% | 833 fps | 99.5% |
| Vihtavuori N330² | <<locked>> | 60% | 15,592 psi | 77% | 1112 fps | 96.3% |
| Vihtavuori N340*² | <<locked>> | 60% | 14,243 psi | 70% | 1047 fps | 86.6% |
| Winchester AutoComp *² | <<locked>> | 60% | 13,953 psi | 69% | 1033 fps | 91.6% |
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 19 powders for .32 H&R Mag. loaded with the .311 | 71gr | Prvi Partizan JHP-RN. ReloadSwiss RS 20 delivers the highest muzzle velocity at 1,188 fps; across all powders the maximum-charge window runs from 906 fps to 1,188 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 5 of the 19 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (140 MPa), the top charges use 51–90 %, 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 rank at the top here: for .32 H&R Mag. with the .311 | 71gr | Prvi Partizan JHP-RN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Herco, Alliant UNIQUE, Lovex S020 burn incompletely and react more sensitively to barrel length and temperature. Accurate Solo 1250, Alliant BE-86, Alliant Herco 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.