Load Specifications
Load data in caliber .35 Rem. with .357 | 158gr | Fiocchi SJSP bullet and 8 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2207, Vihtavuori N120 and ReloadSwiss RS 14.
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 2207 | <<locked>> | 90% | 35,230 psi | 88% | 2467 fps | 98% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 29,370 psi | 74% | 1604 fps | 100% |
| IMR 4227 | <<locked>> | 82% | 35,389 psi | 89% | 2372 fps | 96.7% |
| Lovex S053 | <<locked>> | 82% | 34,258 psi | 86% | 2352 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 28,616 psi | 72% | 1637 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 33,968 psi | 85% | 2382 fps | 96% |
| SNPE Vectan BA6 1/2 | <<locked>> | 86% | 36,071 psi | 90% | 2287 fps | 100% |
| Vihtavuori N120 | <<locked>> | 90% | 35,592 psi | 89% | 2444 fps | 99% |
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 2207 | 33.6 gr | 82% | 27,572 psi | 69% | 2277 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 21,350 psi | 54% | 1430 fps | 100% |
| IMR 4227 | <<locked>> | 80% | 33,301 psi | 83% | 2323 fps | 96% |
| Lovex S053 | <<locked>> | 80% | 32,271 psi | 81% | 2306 fps | 98.7% |
| ReloadSwiss RS 14 | 12 gr | 80% | 20,900 psi | 52% | 1460 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 31,981 psi | 80% | 2333 fps | 95.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 30,763 psi | 77% | 2182 fps | 100% |
| Vihtavuori N120 | 32.8 gr | 80% | 26,368 psi | 66% | 2215 fps | 96% |
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 16 powders for .35 Rem. loaded with the .357 | 158gr | Fiocchi SJSP. ADI AR 2207 delivers the highest muzzle velocity at 2,467 fps; across all powders the maximum-charge window runs from 1,604 fps to 2,467 fps. Accurate 2015 gives the best case fill at 100 %, and 16 of the 16 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (275 MPa), the top charges use 72–90 %, leaving at least 10 % headroom. Accurate 2015, Alliant AR-Comp, Hodgdon TrailBoss 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. ADI AR 2207, Vihtavuori N120, ReloadSwiss RS 14 rank at the top here: for .35 Rem. with the .357 | 158gr | Fiocchi SJSP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 1680, Accurate 2015, Alliant AR-Comp 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.