Load data for .256 Win. Mag. + 87gr Sierra VarmintKing
The most recommended powders for this combination are Hodgdon H4198.
Based on C.I.P., the max. allowed case length is 1.281 in / 32.54 mm, the max. cartridge length is 1.590 in / 40.39 mm, and the max. allowed pressure is 50,763 PSI / 3,500 bar.
Based on C.I.P., the max. allowed case length is 1.281 in / 32.54 mm, the max. cartridge length is 1.590 in / 40.39 mm, and the max. allowed pressure is 50,763 PSI / 3,500 bar.
Load Specifications
ImperialMetric
Bullet:.257 | 87gr | VarmintKing
Cartridge:.256 Win. Mag. load data
Case Length (L3):1.281" | 32.5 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.551" | 14.0 mm
Case Capacity:22 gow | 1.43 cm³
Primer Size:Large Rifle (LR)
Max. Pressure (C.I.P.):50,763 psi | 3,500 bar
Barrel Length:24.0" | 610 mm
Min. Twist Rate:1:13.5
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Community Loads for .256 Win. Mag. + 87gr Sierra VarmintKing
Real loads for this combination shared by our community. Charge weights are only fully visible with an active Pro licence.
| Powder | Charge (gr) | C.O.L. | Barrel Length | Velocity (fps) | Pressure (psi) |
|---|---|---|---|---|---|
| 13.1 gr | 1.590" | 24.0" | 2191 fps | ••• | |
| 13.5 gr | 1.590" | 24.0" | 2245 fps | ••• | |
| 13.7 gr | 1.590" | 24.0" | 2271 fps | ••• | |
| ••• | 1.590" | 24.0" | 2312 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.