Load data for .270 WSM + 135gr Sierra MatchKing
Based on C.I.P., the max. allowed case length is 2.100 in / 53.34 mm, the max. cartridge length is 2.860 in / 72.64 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.

Based on C.I.P., the max. allowed case length is 2.100 in / 53.34 mm, the max. cartridge length is 2.860 in / 72.64 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.

Load Specifications
ImperialMetric
Bullet:.277 | 135gr | MatchKing
Cartridge:.270 WSM load data
Case Length (L3):2.090" | 53.1 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.515" | 13.1 mm
Case Capacity:79.5 gow | 5.15 cm³
Primer Size:Large Rifle Magnum (LRM)
Max. Pressure (C.I.P.):63,817 psi | 4,400 bar
Barrel Length:24.0" | 610 mm
Min. Twist Rate:1:10.0
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Community Loads for .270 WSM + 135gr Sierra MatchKing
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) |
|---|---|---|---|---|---|
| 57.8 gr | 2.875" | 24.0" | 2871 fps | ••• | |
| 59.1 gr | 2.875" | 24.0" | 2922 fps | ••• | |
| 60.3 gr | 2.875" | 24.0" | 2971 fps | ••• | |
| ••• | 2.875" | 24.0" | 3019 fps | ••• | |
| ••• | 2.875" | 24.0" | 3065 fps | ••• | |
| ••• | 2.875" | 24.0" | 3110 fps | ••• | |
| ••• | 2.875" | 24.0" | 3155 fps | ••• | |
| ••• | 2.875" | 24.0" | 2925 fps | ••• | |
| ••• | 2.875" | 24.0" | 2984 fps | ••• | |
| ••• | 2.875" | 24.0" | 3038 fps | ••• | |
| ••• | 2.875" | 24.0" | 3094 fps | ••• | |
| ••• | 2.875" | 24.0" | 3139 fps | ••• | |
| ••• | 2.875" | 24.0" | 3185 fps | ••• | |
| ••• | 2.875" | 24.0" | 2872 fps | ••• | |
| ••• | 2.875" | 24.0" | 2930 fps | ••• | |
| ••• | 2.875" | 24.0" | 2987 fps | ••• | |
| ••• | 2.875" | 24.0" | 3051 fps | ••• | |
| ••• | 2.875" | 24.0" | 3116 fps | ••• | |
| ••• | 2.875" | 24.0" | 2937 fps | ••• | |
| ••• | 2.875" | 24.0" | 2993 fps | ••• | |
| ••• | 2.875" | 24.0" | 3050 fps | ••• | |
| ••• | 2.875" | 24.0" | 3101 fps | ••• | |
| ••• | 2.875" | 24.0" | 2990 fps | ••• | |
| ••• | 2.875" | 24.0" | 3040 fps | ••• | |
| ••• | 2.875" | 24.0" | 3096 fps | ••• | |
| ••• | 2.875" | 24.0" | 3156 fps | ••• | |
| ••• | 2.875" | 24.0" | 3217 fps | ••• | |
| ••• | 2.875" | 24.0" | 3282 fps | ••• | |
| ••• | 2.875" | 24.0" | 2889 fps | ••• | |
| ••• | 2.875" | 24.0" | 2942 fps | ••• | |
| ••• | 2.875" | 24.0" | 3000 fps | ••• | |
| ••• | 2.875" | 24.0" | 3063 fps | ••• | |
| ••• | 2.875" | 24.0" | 2897 fps | ••• | |
| ••• | 2.875" | 24.0" | 2947 fps | ••• | |
| ••• | 2.875" | 24.0" | 2997 fps | ••• | |
| ••• | 2.875" | 24.0" | 3046 fps | ••• | |
| ••• | 2.875" | 24.0" | 3095 fps | ••• | |
| ••• | 2.875" | 24.0" | 2896 fps | ••• | |
| ••• | 2.875" | 24.0" | 2942 fps | ••• | |
| ••• | 2.875" | 24.0" | 2990 fps | ••• | |
| ••• | 2.875" | 24.0" | 2991 fps | ••• | |
| ••• | 2.875" | 24.0" | 3052 fps | ••• | |
| ••• | 2.875" | 24.0" | 3113 fps | ••• | |
| ••• | 2.875" | 24.0" | 3169 fps | ••• | |
| ••• | 2.875" | 24.0" | 2903 fps | ••• | |
| ••• | 2.875" | 24.0" | 2954 fps | ••• | |
| ••• | 2.875" | 24.0" | 3009 fps | ••• | |
| ••• | 2.875" | 24.0" | 3061 fps | ••• | |
| ••• | 2.875" | 24.0" | 3114 fps | ••• | |
| ••• | 2.875" | 24.0" | 3161 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.