Load data for .270 Weath. Mag. + 140gr Sierra GameKing
Based on C.I.P., the max. allowed case length is 2.549 in / 64.74 mm, the max. cartridge length is 3.295 in / 83.69 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.

Based on C.I.P., the max. allowed case length is 2.549 in / 64.74 mm, the max. cartridge length is 3.295 in / 83.69 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.

Load Specifications
ImperialMetric
Bullet:.277 | 140gr | GameKing
Cartridge:.270 Weath. Mag. load data
Case Length (L3):2.549" | 64.7 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.489" | 12.4 mm
Case Capacity:82 gow | 5.31 cm³
Primer Size:Large Rifle Magnum (LRM)
Max. Pressure (C.I.P.):63,817 psi | 4,400 bar
Barrel Length:26.0" | 660 mm
Min. Twist Rate:1:11.5
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Community Loads for .270 Weath. Mag. + 140gr Sierra GameKing
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) |
|---|---|---|---|---|---|
| 62.0 gr | 3.295" | 24.0" | 2785 fps | ••• | |
| 63.2 gr | 3.295" | 24.0" | 2833 fps | ••• | |
| 64.3 gr | 3.295" | 24.0" | 2874 fps | ••• | |
| ••• | 3.295" | 24.0" | 2917 fps | ••• | |
| ••• | 3.295" | 24.0" | 2906 fps | ••• | |
| ••• | 3.295" | 24.0" | 2966 fps | ••• | |
| ••• | 3.295" | 24.0" | 3019 fps | ••• | |
| ••• | 3.295" | 24.0" | 3064 fps | ••• | |
| ••• | 3.295" | 24.0" | 2876 fps | ••• | |
| ••• | 3.295" | 24.0" | 2926 fps | ••• | |
| ••• | 3.295" | 24.0" | 2977 fps | ••• | |
| ••• | 3.295" | 24.0" | 3027 fps | ••• | |
| ••• | 3.295" | 24.0" | 2748 fps | ••• | |
| ••• | 3.295" | 24.0" | 2803 fps | ••• | |
| ••• | 3.295" | 24.0" | 2858 fps | ••• | |
| ••• | 3.295" | 24.0" | 2908 fps | ••• | |
| ••• | 3.295" | 24.0" | 2755 fps | ••• | |
| ••• | 3.295" | 24.0" | 2824 fps | ••• | |
| ••• | 3.295" | 24.0" | 2891 fps | ••• | |
| ••• | 3.295" | 24.0" | 2762 fps | ••• | |
| ••• | 3.295" | 24.0" | 2817 fps | ••• | |
| ••• | 3.295" | 24.0" | 2871 fps | ••• | |
| ••• | 3.295" | 24.0" | 2930 fps | ••• | |
| ••• | 3.295" | 24.0" | 2910 fps | ••• | |
| ••• | 3.295" | 24.0" | 2964 fps | ••• | |
| ••• | 3.295" | 24.0" | 3021 fps | ••• | |
| ••• | 3.295" | 24.0" | 3076 fps | ••• | |
| ••• | 3.295" | 24.0" | 2855 fps | ••• | |
| ••• | 3.295" | 24.0" | 2906 fps | ••• | |
| ••• | 3.295" | 24.0" | 2955 fps | ••• | |
| ••• | 3.295" | 24.0" | 2998 fps | ••• | |
| ••• | 3.295" | 24.0" | 2858 fps | ••• | |
| ••• | 3.295" | 24.0" | 2899 fps | ••• | |
| ••• | 3.295" | 24.0" | 2940 fps | ••• | |
| ••• | 3.295" | 24.0" | 2982 fps | ••• | |
| ••• | 3.295" | 24.0" | 2794 fps | ••• | |
| ••• | 3.295" | 24.0" | 2838 fps | ••• | |
| ••• | 3.295" | 24.0" | 2886 fps | ••• | |
| ••• | 3.295" | 24.0" | 2773 fps | ••• | |
| ••• | 3.295" | 24.0" | 2864 fps | ••• | |
| ••• | 3.295" | 24.0" | 2935 fps | ••• | |
| ••• | 3.295" | 24.0" | 2989 fps | ••• | |
| ••• | 3.295" | 24.0" | 2841 fps | ••• | |
| ••• | 3.295" | 24.0" | 2888 fps | ••• | |
| ••• | 3.295" | 24.0" | 2936 fps | ••• | |
| ••• | 3.295" | 24.0" | 2982 fps | ••• | |
| ••• | 3.295" | 24.0" | 2735 fps | ••• | |
| ••• | 3.295" | 24.0" | 2805 fps | ••• | |
| ••• | 3.295" | 24.0" | 2864 fps | ••• | |
| ••• | 3.295" | 24.0" | 2924 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.