Load data for .270 Weath. Mag. + 150gr Speer Grand Slam
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 | 150gr | Grand Slam
Cartridge:.270 Weath. Mag. load data
Case Length (L3):2.549" | 64.7 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.566" | 14.4 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:1:10.5
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Community Loads for .270 Weath. Mag. + 150gr Speer Grand Slam
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) |
|---|---|---|---|---|---|
| 77.0 gr | 3.260" | — | 2759 fps | ••• | |
| 56.0 gr | 3.260" | — | 2689 fps | ••• | |
| 60.0 gr | 3.260" | — | 2856 fps | ••• | |
| ••• | 3.260" | — | 2733 fps | ••• | |
| ••• | 3.260" | — | 2904 fps | ••• | |
| ••• | 3.260" | — | 2699 fps | ••• | |
| ••• | 3.260" | — | 2942 fps | ••• | |
| ••• | 3.260" | — | 2773 fps | ••• | |
| ••• | 3.260" | — | 2938 fps | ••• | |
| ••• | 3.260" | — | 2730 fps | ••• | |
| ••• | 3.260" | — | 3003 fps | ••• | |
| ••• | 3.260" | — | 2714 fps | ••• | |
| ••• | 3.260" | — | 3065 fps | ••• | |
| ••• | 3.260" | — | 2644 fps | ••• | |
| ••• | 3.260" | — | 2985 fps | ••• | |
| ••• | 3.260" | — | 2672 fps | ••• | |
| ••• | 3.260" | — | 2843 fps | ••• | |
| ••• | 3.260" | — | 2872 fps | ••• | |
| ••• | 3.260" | — | 3056 fps | ••• | |
| ••• | 3.260" | — | 2763 fps | ••• | |
| ••• | 3.260" | — | 2940 fps | ••• | |
| ••• | 3.260" | — | 2776 fps | ••• | |
| ••• | 3.260" | — | 2930 fps | ••• | |
| ••• | 3.260" | — | 2683 fps | ••• | |
| ••• | 3.260" | — | 2967 fps | ••• | |
| ••• | 3.260" | — | 2860 fps | ••• | |
| ••• | 3.260" | — | 3029 fps | ••• | |
| ••• | 3.260" | — | 2668 fps | ••• | |
| ••• | 3.260" | — | 2844 fps | ••• | |
| ••• | 3.260" | — | 2763 fps | ••• | |
| ••• | 3.260" | — | 2941 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.