Load Specifications
Load data in caliber .35 Rem. with .358 | 125gr | Rim Rock RNFP Cowboy bullet and 7 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Lovex S053, SNPE Vectan BA6 1/2 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 2205 | <<locked>> | 82% | 35,389 psi | 89% | 2579 fps | 97.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 26,281 psi | 66% | 1778 fps | 100% |
| Lovex S053 | <<locked>> | 92% | 35,636 psi | 89% | 2684 fps | 97.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 25,063 psi | 63% | 1811 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 94% | 35,389 psi | 89% | 2592 fps | 100% |
| Vihtavuori N110 | <<locked>> | 86% | 35,563 psi | 89% | 2657 fps | 100% |
| Vihtavuori N120 | <<locked>> | 98% | 34,432 psi | 86% | 2707 fps | 96.1% |
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% | 33,011 psi | 83% | 2523 fps | 96.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 18,652 psi | 47% | 1585 fps | 100% |
| Lovex S053 | 33.8 gr | 86% | 29,834 psi | 75% | 2539 fps | 95.4% |
| ReloadSwiss RS 14 | 12 gr | 80% | 17,854 psi | 45% | 1614 fps | 100% |
| SNPE Vectan BA6 1/2 | 28.7 gr | 80% | 23,511 psi | 59% | 2293 fps | 99.2% |
| Vihtavuori N110 | <<locked>> | 80% | 29,283 psi | 73% | 2510 fps | 99.4% |
| Vihtavuori N120 | <<locked>> | 96% | 32,401 psi | 81% | 2657 fps | 95.4% |
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 11 powders for .35 Rem. loaded with the .358 | 125gr | Rim Rock RNFP Cowboy. ADI AR 2207 delivers the highest muzzle velocity at 2,779 fps; across all powders the maximum-charge window runs from 1,778 fps to 2,779 fps. ADI AR 2207 gives the best case fill at 100 %, and 11 of the 11 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (275 MPa), the top charges use 63–90 %, leaving at least 10 % headroom. 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, SNPE Vectan BA6 1/2, ReloadSwiss RS 14 rank at the top here: for .35 Rem. with the .358 | 125gr | Rim Rock RNFP Cowboy they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, IMR 4227, ReloadSwiss RS 36, Shooters World SOCOM 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.