Load Specifications
Load data in caliber .32 Rem. with .321 | 170gr | H&N KS H bullet and 21 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-10x, Alliant AR-Comp and Norma 200.
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: 22"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 82% | 37,521 psi | 88% | 2146 fps | 98.5% |
| Accurate 2015 | <<locked>> | 98% | 37,942 psi | 89% | 2238 fps | 97.8% |
| Accurate LT-30 | <<locked>> | 86% | 36,651 psi | 86% | 2113 fps | 95.8% |
| ADI AR 2207 | <<locked>> | 86% | 36,927 psi | 86% | 2201 fps | 100% |
| ADI AR 2219 | <<locked>> | 90% | 37,811 psi | 88% | 2247 fps | 95.8% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 37,739 psi | 88% | 2300 fps | 99.6% |
| Alliant Reloder-10x | <<locked>> | 92% | 36,695 psi | 86% | 2224 fps | 98.6% |
| Alliant Reloder-7 | <<locked>> | 84% | 36,245 psi | 85% | 2159 fps | 98.8% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 36,550 psi | 85% | 2139 fps | 96.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,458 psi | 71% | 1401 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 35,926 psi | 84% | 2267 fps | 96.1% |
| IMR 4198 | <<locked>> | 90% | 37,565 psi | 88% | 2188 fps | 99.2% |
| Norma 200 | <<locked>> | 90% | 38,580 psi | 90% | 2251 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 29,863 psi | 70% | 1434 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 37,086 psi | 87% | 1991 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 92% | 38,334 psi | 90% | 2234 fps | 97.1% |
| Somchem S335ᴾ | <<locked>> | 100% | 38,508 psi | 90% | 2215 fps | 95.9% |
| Vihtavuori N120 | <<locked>> | 86% | 37,217 psi | 87% | 2172 fps | 100% |
| Vihtavuori N130 | <<locked>> | 94% | 37,942 psi | 89% | 2192 fps | 98.5% |
| Vihtavuori N133 | <<locked>> | 98% | 37,246 psi | 87% | 2185 fps | 97.4% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 31,952 psi | 75% | 2165 fps | 96.2% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 22"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 35,099 psi | 82% | 2103 fps | 98% |
| Accurate 2015 | <<locked>> | 90% | 29,182 psi | 68% | 2067 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 84% | 34,243 psi | 80% | 2067 fps | 95% |
| ADI AR 2207 | <<locked>> | 80% | 30,356 psi | 71% | 2077 fps | 99.6% |
| ADI AR 2219 | <<locked>> | 88% | 35,375 psi | 83% | 2201 fps | 95% |
| Alliant AR-Comp | 28.9 gr | 88% | 25,556 psi | 60% | 2024 fps | 95.8% |
| Alliant Reloder-10x | 26.3 gr | 82% | 26,498 psi | 62% | 2011 fps | 95.3% |
| Alliant Reloder-7 | <<locked>> | 80% | 31,908 psi | 75% | 2073 fps | 97.8% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 34,330 psi | 80% | 2100 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,104 psi | 52% | 1250 fps | 100% |
| IMR 3031 | <<locked>> | 98% | 33,562 psi | 78% | 2221 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 27,978 psi | 65% | 1985 fps | 96.7% |
| Norma 200 | 26.6 gr | 80% | 27,746 psi | 65% | 2031 fps | 96.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 21,437 psi | 50% | 1273 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 34,896 psi | 82% | 1959 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 33,736 psi | 79% | 2146 fps | 95.7% |
| Somchem S335 | <<locked>> | 98% | 35,998 psi | 84% | 2169 fps | 95.2% |
| Vihtavuori N120 | <<locked>> | 80% | 30,661 psi | 72% | 2054 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 27,702 psi | 65% | 1988 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 92% | 31,024 psi | 73% | 2064 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 98% | 29,820 psi | 70% | 2116 fps | 95.3% |
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 48 powders for .32 Rem. loaded with the .321 | 170gr | H&N KS H. Alliant AR-Comp delivers the highest muzzle velocity at 2,300 fps; across all powders the maximum-charge window runs from 1,401 fps to 2,300 fps. Accurate 2495 gives the best case fill at 100 %, and 48 of the 48 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (295 MPa), the top charges use 66–90 %, leaving at least 10 % headroom. Accurate 2495, Accurate 2520, Alliant AR-Comp 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. Alliant Reloder-10x, Alliant AR-Comp, Norma 200 rank at the top here: for .32 Rem. with the .321 | 170gr | H&N KS H they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2460, Accurate 2520, Accurate LT-32 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.