Load Specifications
Load data in caliber .32 H&R Mag. with .314 | 83gr | Lapua Lead Wadcutter bullet and 15 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>> | 64% | 17,622 psi | 87% | 1056 fps | 98.3% |
| Alliant BE-86² | <<locked>> | 64% | 17,666 psi | 87% | 1056 fps | 99.6% |
| Alliant Herco* | <<locked>> | 80% | 18,246 psi | 90% | 1099 fps | 93.7% |
| Alliant UNIQUE*² | <<locked>> | 64% | 16,940 psi | 83% | 1073 fps | 92.4% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 76% | 16,230 psi | 80% | 1017 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 11,908 psi | 59% | 879 fps | 100% |
| Maxam CSB 1² | <<locked>> | 64% | 15,983 psi | 79% | 1014 fps | 97.5% |
| Maxam CSB 2² | <<locked>> | 64% | 15,998 psi | 79% | 1043 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 9,979 psi | 49% | 840 fps | 96.5% |
| ReloadSwiss RS 20*² | <<locked>> | 68% | 16,911 psi | 83% | 1086 fps | 94.8% |
| SNPE Vectan A0*² | <<locked>> | 68% | 18,318 psi | 90% | 1073 fps | 93.8% |
| Somchem MS200*² | <<locked>> | 64% | 17,999 psi | 89% | 1076 fps | 94.7% |
| Vihtavuori N32C Tin Star | <<locked>> | 88% | 18,173 psi | 90% | 1010 fps | 100% |
| Vihtavuori N340*² | <<locked>> | 64% | 17,521 psi | 86% | 1070 fps | 93.5% |
| Winchester AutoComp ² | <<locked>> | 64% | 16,650 psi | 82% | 1043 fps | 96.8% |
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% | 15,156 psi | 75% | 997 fps | 96.7% |
| Alliant BE-86² | <<locked>> | 60% | 15,447 psi | 76% | 1007 fps | 98.7% |
| Alliant Herco*² | <<locked>> | 64% | 11,516 psi | 57% | 909 fps | 85.1% |
| Alliant UNIQUE*² | <<locked>> | 60% | 14,765 psi | 73% | 1010 fps | 89.9% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 9,935 psi | 49% | 843 fps | 96.9% |
| Hodgdon TrailBoss*² | 2.1 gr | 60% | 4,656 psi | 23% | 594 fps | 88.4% |
| Maxam CSB 1² | <<locked>> | 60% | 14,475 psi | 71% | 974 fps | 96.2% |
| Maxam CSB 2² | <<locked>> | 60% | 14,417 psi | 71% | 1004 fps | 99.4% |
| ReloadSwiss RS 14*² | <<locked>> | 72% | 5,613 psi | 28% | 653 fps | 86.3% |
| ReloadSwiss RS 20*² | <<locked>> | 60% | 13,402 psi | 66% | 988 fps | 90.6% |
| SNPE Vectan A0*² | <<locked>> | 60% | 14,678 psi | 72% | 978 fps | 90% |
| Somchem MS200*² | <<locked>> | 60% | 15,708 psi | 77% | 1017 fps | 92.5% |
| Vihtavuori N32C Tin Star² | 2.9 gr | 60% | 8,485 psi | 42% | 771 fps | 99.9% |
| Vihtavuori N340*² | <<locked>> | 60% | 15,243 psi | 75% | 1010 fps | 91.1% |
| Winchester AutoComp ² | <<locked>> | 60% | 14,649 psi | 72% | 991 fps | 95.1% |
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 15 powders for .32 H&R Mag. loaded with the .314 | 83gr | Lapua Lead Wadcutter. Alliant Herco delivers the highest muzzle velocity at 1,099 fps; across all powders the maximum-charge window runs from 840 fps to 1,099 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 4 of the 15 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (140 MPa), the top charges use 49–90 %, 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 .314 | 83gr | Lapua Lead Wadcutter they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Herco, Alliant UNIQUE, ReloadSwiss RS 20 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.