Load Specifications
Load data in caliber .25-35 Win. with .257 | 120gr | Speer Spitzer Soft Point bullet and 40 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, IMR 3031 and Lovex D073.6.
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% | 38,305 psi | 87% | 2182 fps | 99.6% |
| Accurate 2460 | <<locked>> | 82% | 38,711 psi | 88% | 2211 fps | 97.7% |
| Accurate 2495 | <<locked>> | 92% | 38,899 psi | 88% | 2254 fps | 99.8% |
| Accurate 2520 | <<locked>> | 86% | 37,333 psi | 84% | 2234 fps | 96.9% |
| Accurate 4064 | <<locked>> | 94% | 39,117 psi | 88% | 2277 fps | 98.5% |
| Alliant AR-Comp | <<locked>> | 86% | 37,623 psi | 85% | 2327 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 38,812 psi | 88% | 2353 fps | 96.4% |
| Bofors RP3 | <<locked>> | 94% | 37,971 psi | 86% | 2352 fps | 96.3% |
| Hodgdon Benchmark | <<locked>> | 84% | 39,958 psi | 90% | 2277 fps | 97.5% |
| Hodgdon BL-C2 | <<locked>> | 88% | 39,842 psi | 90% | 2283 fps | 96.4% |
| Hodgdon H322 | <<locked>> | 84% | 39,523 psi | 89% | 2328 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,910 psi | 77% | 1481 fps | 100% |
| IMR 3031 | <<locked>> | 92% | 39,566 psi | 89% | 2385 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 39,740 psi | 90% | 2316 fps | 96.9% |
| Lovex D073.5 | <<locked>> | 82% | 38,754 psi | 88% | 2302 fps | 97.6% |
| Lovex D073.6 | <<locked>> | 88% | 37,333 psi | 84% | 2323 fps | 98.1% |
| Lovex S062 | <<locked>> | 92% | 39,508 psi | 89% | 2331 fps | 97% |
| Norma 201 | <<locked>> | 88% | 38,957 psi | 88% | 2303 fps | 96.8% |
| Norma 202 | <<locked>> | 88% | 39,073 psi | 88% | 2326 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,968 psi | 77% | 1518 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 39,334 psi | 89% | 2308 fps | 98.1% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 39,363 psi | 89% | 2427 fps | 97.9% |
| Rottweil R 901 | <<locked>> | 84% | 38,348 psi | 87% | 2275 fps | 98.6% |
| Rottweil R 902 | <<locked>> | 90% | 39,247 psi | 89% | 2302 fps | 96.8% |
| Rottweil R 903 | <<locked>> | 96% | 37,898 psi | 86% | 2342 fps | 95.9% |
| Shooters World Match Rifle | <<locked>> | 88% | 37,333 psi | 84% | 2323 fps | 98.1% |
| Shooters World Precision | <<locked>> | 92% | 39,508 psi | 89% | 2331 fps | 97% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 39,044 psi | 88% | 2242 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 38,000 psi | 86% | 2242 fps | 99.3% |
| Somchem S321 | <<locked>> | 84% | 39,624 psi | 90% | 2338 fps | 97.2% |
| Somchem S335 | <<locked>> | 86% | 38,218 psi | 86% | 2247 fps | 99.2% |
| Somchem S355 | <<locked>> | 96% | 39,421 psi | 89% | 2352 fps | 96% |
| Vihtavuori N130 | <<locked>> | 82% | 38,566 psi | 87% | 2229 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 38,493 psi | 87% | 2245 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 92% | 39,987 psi | 90% | 2260 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 90% | 38,406 psi | 87% | 2297 fps | 99.1% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 38,421 psi | 87% | 2297 fps | 97% |
| Vihtavuori N530 | <<locked>> | 84% | 39,320 psi | 89% | 2320 fps | 97% |
| Vihtavuori N540 | <<locked>> | 90% | 38,218 psi | 86% | 2318 fps | 98.7% |
| Winchester 748 | <<locked>> | 84% | 38,377 psi | 87% | 2349 fps | 97.5% |
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% | 33,678 psi | 76% | 2096 fps | 98.9% |
| Accurate 2460 | <<locked>> | 80% | 36,158 psi | 82% | 2165 fps | 97.1% |
| Accurate 2495 | <<locked>> | 80% | 26,237 psi | 59% | 1988 fps | 97% |
| Accurate 2520 | <<locked>> | 82% | 32,474 psi | 73% | 2136 fps | 95.3% |
| Accurate 4064 | <<locked>> | 84% | 28,297 psi | 64% | 2051 fps | 95% |
| Alliant AR-Comp | <<locked>> | 80% | 31,096 psi | 70% | 2200 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 36,695 psi | 83% | 2311 fps | 95.8% |
| Bofors RP3 | <<locked>> | 92% | 35,839 psi | 81% | 2309 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 35,447 psi | 80% | 2189 fps | 96.3% |
| Hodgdon BL-C2 | <<locked>> | 86% | 37,173 psi | 84% | 2234 fps | 95.6% |
| Hodgdon H322 | <<locked>> | 80% | 34,708 psi | 78% | 2236 fps | 98.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,990 psi | 56% | 1328 fps | 100% |
| IMR 3031 | 21 gr | 80% | 27,456 psi | 62% | 2122 fps | 97.5% |
| IMR 8208 XBR | <<locked>> | 82% | 35,186 psi | 80% | 2226 fps | 95.5% |
| Lovex D073.5 | <<locked>> | 80% | 36,230 psi | 82% | 2253 fps | 97% |
| Lovex D073.6 | 23.1 gr | 80% | 28,529 psi | 64% | 2134 fps | 95.2% |
| Lovex S062 | <<locked>> | 88% | 34,882 psi | 79% | 2240 fps | 95.6% |
| Norma 201 | <<locked>> | 84% | 34,389 psi | 78% | 2213 fps | 95.4% |
| Norma 202 | <<locked>> | 80% | 30,356 psi | 69% | 2147 fps | 96.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,860 psi | 56% | 1356 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 37,173 psi | 84% | 2267 fps | 97.6% |
| ReloadSwiss RS 60 | 26.5 gr | 90% | 32,721 psi | 74% | 2274 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 33,910 psi | 77% | 2184 fps | 97.5% |
| Rottweil R 902 | <<locked>> | 86% | 34,693 psi | 78% | 2212 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 94% | 35,766 psi | 81% | 2299 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 28,529 psi | 64% | 2134 fps | 95.2% |
| Shooters World Precision | <<locked>> | 88% | 34,882 psi | 79% | 2240 fps | 95.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 32,460 psi | 73% | 2114 fps | 97.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 26,281 psi | 59% | 1992 fps | 96.1% |
| Somchem S321 | <<locked>> | 80% | 34,650 psi | 78% | 2241 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 31,662 psi | 72% | 2117 fps | 97.9% |
| Somchem S355 | <<locked>> | 94% | 37,231 psi | 84% | 2310 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 36,434 psi | 82% | 2192 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 30,153 psi | 68% | 2081 fps | 98.8% |
| Vihtavuori N135 | <<locked>> | 80% | 27,282 psi | 62% | 2001 fps | 97.3% |
| Vihtavuori N140 | <<locked>> | 80% | 28,253 psi | 64% | 2082 fps | 96.2% |
| Vihtavuori N150 | <<locked>> | 96% | 33,446 psi | 76% | 2217 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 34,200 psi | 77% | 2218 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 27,949 psi | 63% | 2096 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 33,562 psi | 76% | 2250 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 77 powders for .25-35 Win. loaded with the .257 | 120gr | Speer Spitzer Soft Point. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,427 fps; across all powders the maximum-charge window runs from 1,481 fps to 2,427 fps. Alliant Reloder-16 gives the best case fill at 100 %, and 77 of the 77 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (305 MPa), the top charges use 75–90 %, leaving at least 10 % headroom. The 120.0 gr projectile in 0.257" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-16, Hodgdon Hybrid 100V, 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. ReloadSwiss RS 60, IMR 3031, Lovex D073.6 rank at the top here: for .25-35 Win. with the .257 | 120gr | Speer Spitzer Soft Point they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2206H, ADI AR 2208, Alliant Power Pro 2000-MR 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.