Load Specifications
Load data in caliber .25-35 Win. with .257 | 117gr | Sellier & Bellot SPFN bullet and 26 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are IMR 3031, Lovex D073.6 and Shooters World Match Rifle.
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 |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 84% | 39,015 psi | 88% | 2238 fps | 99.7% |
| Accurate 2460 | <<locked>> | 82% | 39,639 psi | 90% | 2270 fps | 97.9% |
| Accurate 2495 | <<locked>> | 92% | 39,856 psi | 90% | 2310 fps | 99.9% |
| Accurate 2520 | <<locked>> | 86% | 39,827 psi | 90% | 2310 fps | 97.6% |
| Accurate 4064 | <<locked>> | 94% | 39,900 psi | 90% | 2329 fps | 98.6% |
| Alliant AR-Comp | <<locked>> | 86% | 38,261 psi | 86% | 2297 fps | 100% |
| Hodgdon Benchmark | <<locked>> | 82% | 38,043 psi | 86% | 2198 fps | 95.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,533 psi | 76% | 1480 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 39,218 psi | 89% | 2333 fps | 99.4% |
| Lovex D073.5 | <<locked>> | 82% | 39,204 psi | 89% | 2264 fps | 96.6% |
| Lovex D073.6 | <<locked>> | 88% | 38,174 psi | 86% | 2290 fps | 97.1% |
| Norma 201 | <<locked>> | 88% | 39,842 psi | 90% | 2274 fps | 95.8% |
| Norma 202 | <<locked>> | 88% | 39,566 psi | 89% | 2290 fps | 98.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,707 psi | 76% | 1516 fps | 100% |
| Rottweil R 901 | <<locked>> | 84% | 38,638 psi | 87% | 2234 fps | 97.7% |
| Shooters World Match Rifle | <<locked>> | 88% | 38,174 psi | 86% | 2290 fps | 97.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 39,711 psi | 90% | 2215 fps | 98.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 38,406 psi | 87% | 2208 fps | 98.7% |
| Somchem S335 | <<locked>> | 86% | 38,725 psi | 88% | 2215 fps | 98.6% |
| Vihtavuori N130 | <<locked>> | 82% | 39,914 psi | 90% | 2215 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 39,494 psi | 89% | 2221 fps | 99.7% |
| Vihtavuori N135 | <<locked>> | 90% | 38,305 psi | 87% | 2274 fps | 99.7% |
| Vihtavuori N140 | <<locked>> | 90% | 39,740 psi | 90% | 2274 fps | 98.5% |
| Vihtavuori N150 | <<locked>> | 96% | 38,769 psi | 88% | 2267 fps | 95.9% |
| Vihtavuori N540 | <<locked>> | 90% | 38,435 psi | 87% | 2264 fps | 97.7% |
| Winchester 748 | <<locked>> | 86% | 38,696 psi | 87% | 2306 fps | 96.3% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 34,519 psi | 78% | 2149 fps | 99% |
| Accurate 2460 | <<locked>> | 80% | 37,101 psi | 84% | 2221 fps | 97.3% |
| Accurate 2495 | <<locked>> | 80% | 26,919 psi | 61% | 2041 fps | 97.2% |
| Accurate 2520 | <<locked>> | 80% | 32,561 psi | 74% | 2162 fps | 95.3% |
| Accurate 4064 | <<locked>> | 84% | 28,921 psi | 65% | 2100 fps | 95.2% |
| Alliant AR-Comp | <<locked>> | 80% | 31,488 psi | 71% | 2162 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 80% | 35,694 psi | 81% | 2152 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,077 psi | 57% | 1322 fps | 100% |
| IMR 3031 | 22.5 gr | 80% | 30,197 psi | 68% | 2142 fps | 97.2% |
| Lovex D073.5 | <<locked>> | 80% | 36,767 psi | 83% | 2218 fps | 95.8% |
| Lovex D073.6 | 25.2 gr | 84% | 33,315 psi | 75% | 2192 fps | 95.5% |
| Norma 201 | <<locked>> | 86% | 37,362 psi | 84% | 2224 fps | 95% |
| Norma 202 | <<locked>> | 80% | 30,676 psi | 69% | 2103 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,932 psi | 56% | 1352 fps | 100% |
| Rottweil R 901 | <<locked>> | 80% | 34,345 psi | 78% | 2149 fps | 96.4% |
| Shooters World Match Rifle | 25.2 gr | 84% | 33,315 psi | 75% | 2192 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 32,837 psi | 74% | 2080 fps | 96.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 28,384 psi | 64% | 2001 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 32,300 psi | 73% | 2087 fps | 96.9% |
| Vihtavuori N130 | <<locked>> | 80% | 37,347 psi | 84% | 2169 fps | 99.8% |
| Vihtavuori N133 | <<locked>> | 80% | 32,663 psi | 74% | 2093 fps | 98.6% |
| Vihtavuori N135 | <<locked>> | 80% | 27,702 psi | 63% | 2051 fps | 97.4% |
| Vihtavuori N140 | <<locked>> | 80% | 28,921 psi | 65% | 2051 fps | 95% |
| Vihtavuori N150 | <<locked>> | 94% | 36,303 psi | 82% | 2221 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 84% | 31,647 psi | 72% | 2126 fps | 95.5% |
| Winchester 748 | <<locked>> | 84% | 36,303 psi | 82% | 2257 fps | 95.5% |
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 26 powders for .25-35 Win. loaded with the .257 | 117gr | Sellier & Bellot SPFN. IMR 3031 delivers the highest muzzle velocity at 2,333 fps; across all powders the maximum-charge window runs from 1,480 fps to 2,333 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 26 of the 26 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (305 MPa), the top charges use 76–90 %, leaving at least 10 % headroom. The 117.0 gr projectile in 0.257" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. 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. IMR 3031, Lovex D073.6, Shooters World Match Rifle rank at the top here: for .25-35 Win. with the .257 | 117gr | Sellier & Bellot SPFN 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.