Load Specifications
Load data in caliber .25-35 Win. with .257 | 100gr | Rhino Solid Shank bullet and 22 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are IMR 3031, Alliant AR-Comp and Accurate 2495.
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>> | 88% | 38,566 psi | 87% | 2408 fps | 98.6% |
| Accurate 2495 | <<locked>> | 96% | 38,247 psi | 86% | 2467 fps | 98.8% |
| Accurate 4064 | <<locked>> | 98% | 38,203 psi | 86% | 2484 fps | 96.5% |
| ADI AR 2219 | <<locked>> | 82% | 38,624 psi | 87% | 2444 fps | 97.1% |
| Alliant AR-Comp | <<locked>> | 90% | 37,608 psi | 85% | 2474 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 84% | 38,870 psi | 88% | 2425 fps | 99.3% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 39,189 psi | 89% | 2362 fps | 97.7% |
| Hodgdon H322 | <<locked>> | 84% | 37,739 psi | 85% | 2425 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,750 psi | 74% | 1591 fps | 100% |
| IMR 3031 | <<locked>> | 92% | 38,043 psi | 86% | 2490 fps | 97.8% |
| IMR 4198 | <<locked>> | 82% | 38,435 psi | 87% | 2379 fps | 99.7% |
| Norma 202 | <<locked>> | 92% | 38,856 psi | 88% | 2451 fps | 96.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,750 psi | 74% | 1631 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 39,262 psi | 89% | 2451 fps | 96% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 39,740 psi | 90% | 2438 fps | 98.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 39,334 psi | 89% | 2375 fps | 96.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 38,203 psi | 86% | 2372 fps | 96.9% |
| Somchem S335 | <<locked>> | 90% | 38,406 psi | 87% | 2379 fps | 96.8% |
| Vihtavuori N130 | <<locked>> | 86% | 39,552 psi | 89% | 2388 fps | 99.3% |
| Vihtavuori N133 | <<locked>> | 90% | 38,885 psi | 88% | 2385 fps | 98.5% |
| Vihtavuori N135 | <<locked>> | 96% | 39,465 psi | 89% | 2480 fps | 98.9% |
| Vihtavuori N140 | <<locked>> | 94% | 39,088 psi | 88% | 2438 fps | 96.5% |
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% | 29,776 psi | 67% | 2215 fps | 95.9% |
| Accurate 2495 | 24.4 gr | 86% | 27,224 psi | 62% | 2215 fps | 95.2% |
| Accurate 4064 | <<locked>> | 96% | 35,737 psi | 81% | 2428 fps | 95.7% |
| ADI AR 2219 | <<locked>> | 80% | 36,114 psi | 82% | 2392 fps | 96.3% |
| Alliant AR-Comp | 22.5 gr | 80% | 27,412 psi | 62% | 2224 fps | 97.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 34,345 psi | 78% | 2333 fps | 98.5% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 36,825 psi | 83% | 2313 fps | 97.1% |
| Hodgdon H322 | <<locked>> | 80% | 33,040 psi | 75% | 2320 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,975 psi | 54% | 1417 fps | 100% |
| IMR 3031 | 24.1 gr | 86% | 31,415 psi | 71% | 2336 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 35,882 psi | 81% | 2326 fps | 99.4% |
| Norma 202 | <<locked>> | 90% | 36,376 psi | 82% | 2402 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,120 psi | 55% | 1453 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 36,405 psi | 82% | 2388 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 35,027 psi | 79% | 2339 fps | 97% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 37,173 psi | 84% | 2333 fps | 95.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 33,779 psi | 76% | 2280 fps | 95.5% |
| Somchem S335 | <<locked>> | 86% | 33,765 psi | 76% | 2283 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 33,112 psi | 75% | 2257 fps | 98% |
| Vihtavuori N133 | <<locked>> | 80% | 28,790 psi | 65% | 2162 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 86% | 28,732 psi | 65% | 2238 fps | 95.7% |
| Vihtavuori N140 | <<locked>> | 90% | 34,693 psi | 78% | 2343 fps | 95% |
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 .25-35 Win. loaded with the .257 | 100gr | Rhino Solid Shank. IMR 3031 delivers the highest muzzle velocity at 2,490 fps; across all powders the maximum-charge window runs from 1,591 fps to 2,490 fps. Hodgdon TrailBoss 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 (305 MPa), the top charges use 74–90 %, leaving at least 10 % headroom. The 100.0 gr projectile in 0.257" calls for a 1:12.0 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, Alliant AR-Comp, Accurate 2495 rank at the top here: for .25-35 Win. with the .257 | 100gr | Rhino Solid Shank 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.