Load Specifications
Load data in caliber .32 Win. Spec. with .323 | 120gr | Impala LWHV LS bullet and 8 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N120, Lovex S053 and SNPE Vectan BA6 1/2.
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 ≥ 80% and propellant combustion ≥ 95%. 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: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| ADI AR 2205 | <<locked>> | 82% | 39,552 psi | 89% | 2339 fps | 98.8% |
| ADI AR 2207 | <<locked>> | 98% | 38,841 psi | 88% | 2510 fps | 97% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 29,080 psi | 66% | 1572 fps | 100% |
| Lovex S053 | <<locked>> | 90% | 38,609 psi | 87% | 2415 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 28,587 psi | 65% | 1608 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 92% | 38,377 psi | 87% | 2313 fps | 100% |
| Vihtavuori N110 | <<locked>> | 84% | 38,928 psi | 88% | 2379 fps | 100% |
| Vihtavuori N120 | <<locked>> | 98% | 39,262 psi | 89% | 2487 fps | 98.2% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| ADI AR 2205 | <<locked>> | 80% | 37,652 psi | 85% | 2303 fps | 98.5% |
| ADI AR 2207 | <<locked>> | 92% | 32,909 psi | 74% | 2379 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 21,350 psi | 48% | 1398 fps | 100% |
| Lovex S053 | 21.6 gr | 80% | 29,588 psi | 67% | 2208 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 21,161 psi | 48% | 1434 fps | 100% |
| SNPE Vectan BA6 1/2 | 19.8 gr | 80% | 28,398 psi | 64% | 2110 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 34,998 psi | 79% | 2303 fps | 100% |
| Vihtavuori N120 | 24.8 gr | 88% | 30,066 psi | 68% | 2274 fps | 95.2% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 17 powders for .32 Win. Spec. loaded with the .323 | 120gr | Impala LWHV LS. ADI AR 2207 delivers the highest muzzle velocity at 2,510 fps; across all powders the maximum-charge window runs from 1,572 fps to 2,510 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 17 of the 17 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (305 MPa), the top charges use 65–90 %, leaving at least 10 % headroom. The 120.0 gr projectile in 0.323" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, IMR 4198, Norma 200 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 N120, Lovex S053, SNPE Vectan BA6 1/2 rank at the top here: for .32 Win. Spec. with the .323 | 120gr | Impala LWHV LS they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 1680, Alliant Reloder-7, IMR 4198 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.