Load Specifications
Load data in caliber .32 Win. Spec. with .318 | 125gr | Sax KJG-SR bullet and 10 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Lovex S053, Vihtavuori N120 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% | 37,594 psi | 85% | 2277 fps | 98.8% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 39,189 psi | 89% | 2490 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 27,789 psi | 63% | 1529 fps | 100% |
| IMR 4227 | <<locked>> | 90% | 38,130 psi | 86% | 2362 fps | 95.8% |
| Lovex S053 | <<locked>> | 92% | 38,783 psi | 88% | 2392 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 27,122 psi | 61% | 1565 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 92% | 38,856 psi | 88% | 2421 fps | 95.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 94% | 38,203 psi | 86% | 2283 fps | 100% |
| Vihtavuori N110 | <<locked>> | 86% | 38,508 psi | 87% | 2346 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 39,711 psi | 90% | 2467 fps | 98.7% |
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% | 35,694 psi | 81% | 2241 fps | 98.4% |
| ADI AR 2207 | <<locked>> | 94% | 32,721 psi | 74% | 2356 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 20,305 psi | 46% | 1368 fps | 100% |
| IMR 4227 | <<locked>> | 88% | 36,100 psi | 82% | 2323 fps | 95.1% |
| Lovex S053 | 21.5 gr | 80% | 27,543 psi | 62% | 2142 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 19,624 psi | 44% | 1391 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 90% | 36,521 psi | 83% | 2375 fps | 95.1% |
| SNPE Vectan BA6 1/2 | 19.6 gr | 80% | 26,121 psi | 59% | 2041 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 32,416 psi | 73% | 2231 fps | 100% |
| Vihtavuori N120 | 25.2 gr | 90% | 29,660 psi | 67% | 2251 fps | 95.7% |
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 10 powders for .32 Win. Spec. loaded with the .318 | 125gr | Sax KJG-SR. ADI AR 2207 delivers the highest muzzle velocity at 2,490 fps; across all powders the maximum-charge window runs from 1,529 fps to 2,490 fps. ADI AR 2207 gives the best case fill at 100 %, and 10 of the 10 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (305 MPa), the top charges use 61–90 %, leaving at least 10 % headroom. The 125.0 gr projectile in 0.318" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. ADI AR 2207, 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. Lovex S053, Vihtavuori N120, SNPE Vectan BA6 1/2 rank at the top here: for .32 Win. Spec. with the .318 | 125gr | Sax KJG-SR they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.