Load Specifications
Load data in caliber .32 Rem. with .322 | 170gr | Rim Rock RNFP Cowboy bullet and 22 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% | 37,811 psi | 88% | 2156 fps | 98.6% |
| Accurate 2015 | <<locked>> | 98% | 38,276 psi | 89% | 2247 fps | 98% |
| Accurate LT-30 | <<locked>> | 86% | 36,912 psi | 86% | 2123 fps | 95.9% |
| ADI AR 2207 | <<locked>> | 86% | 37,362 psi | 87% | 2211 fps | 100% |
| ADI AR 2219 | <<locked>> | 90% | 38,392 psi | 90% | 2267 fps | 96.1% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 38,319 psi | 90% | 2316 fps | 99.7% |
| Alliant Reloder-10x | <<locked>> | 92% | 37,405 psi | 87% | 2244 fps | 98.8% |
| Alliant Reloder-7 | <<locked>> | 84% | 36,608 psi | 86% | 2169 fps | 98.9% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 37,072 psi | 87% | 2156 fps | 96.3% |
| Hodgdon H4198 | <<locked>> | 84% | 38,363 psi | 90% | 2159 fps | 95.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,414 psi | 71% | 1407 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 36,129 psi | 84% | 2280 fps | 96.4% |
| IMR 4198 | <<locked>> | 90% | 38,261 psi | 89% | 2205 fps | 99.4% |
| Norma 200 | <<locked>> | 88% | 36,724 psi | 86% | 2221 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 29,849 psi | 70% | 1437 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 37,217 psi | 87% | 1998 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 92% | 38,653 psi | 90% | 2244 fps | 97.3% |
| Somchem S335ᴾ | <<locked>> | 100% | 38,667 psi | 90% | 2221 fps | 96.1% |
| Vihtavuori N120 | <<locked>> | 86% | 37,652 psi | 88% | 2182 fps | 100% |
| Vihtavuori N130 | <<locked>> | 94% | 38,638 psi | 90% | 2208 fps | 98.7% |
| Vihtavuori N133 | <<locked>> | 98% | 37,797 psi | 88% | 2201 fps | 97.6% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 32,169 psi | 75% | 2175 fps | 96.4% |
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% | 35,375 psi | 83% | 2110 fps | 98.1% |
| Accurate 2015 | <<locked>> | 90% | 29,515 psi | 69% | 2077 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 84% | 34,577 psi | 81% | 2080 fps | 95.2% |
| ADI AR 2207 | <<locked>> | 80% | 30,777 psi | 72% | 2090 fps | 99.7% |
| ADI AR 2219 | <<locked>> | 88% | 35,926 psi | 84% | 2218 fps | 95.3% |
| Alliant AR-Comp | 28.6 gr | 86% | 24,352 psi | 57% | 1995 fps | 95.2% |
| Alliant Reloder-10x | 26.6 gr | 82% | 26,847 psi | 63% | 2021 fps | 95.5% |
| Alliant Reloder-7 | <<locked>> | 80% | 32,271 psi | 75% | 2083 fps | 97.9% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 34,519 psi | 81% | 2106 fps | 95.5% |
| Hodgdon H4198 | <<locked>> | 82% | 36,230 psi | 85% | 2119 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,162 psi | 52% | 1253 fps | 100% |
| IMR 3031 | <<locked>> | 98% | 34,098 psi | 80% | 2238 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 28,340 psi | 66% | 2001 fps | 96.9% |
| Norma 200 | 26.9 gr | 80% | 28,094 psi | 66% | 2044 fps | 97% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 21,814 psi | 51% | 1283 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 35,375 psi | 83% | 1969 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 32,097 psi | 75% | 2116 fps | 95.1% |
| Somchem S335 | <<locked>> | 98% | 36,550 psi | 85% | 2185 fps | 95.4% |
| Vihtavuori N120 | <<locked>> | 80% | 31,082 psi | 73% | 2064 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 27,992 psi | 65% | 1998 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 92% | 31,285 psi | 73% | 2073 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 98% | 30,342 psi | 71% | 2136 fps | 95.6% |
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 22 powders for .32 Rem. loaded with the .322 | 170gr | Rim Rock RNFP Cowboy. Alliant AR-Comp delivers the highest muzzle velocity at 2,316 fps; across all powders the maximum-charge window runs from 1,407 fps to 2,316 fps. Alliant AR-Comp gives the best case fill at 100 %, and 22 of the 22 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (295 MPa), the top charges use 70–90 %, leaving at least 10 % headroom. Alliant AR-Comp, Hodgdon TrailBoss, IMR 3031 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 .322 | 170gr | Rim Rock RNFP Cowboy 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.