Load data for .338-378 Weath. Mag. + 275gr Swift A-Frame
Based on C.I.P., the max. allowed case length is 2.913 in / 73.99 mm, the max. cartridge length is 3.763 in / 95.58 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.
Based on C.I.P., the max. allowed case length is 2.913 in / 73.99 mm, the max. cartridge length is 3.763 in / 95.58 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.
Load Specifications
ImperialMetric
Bullet:.338 | 275gr | A-Frame
Cartridge:.338-378 Weath. Mag. load data
Case Length (L3):2.910" | 73.9 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.705" | 17.9 mm
Case Capacity:137 gow | 8.88 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:1:14.5
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Community Loads for .338-378 Weath. Mag. + 275gr Swift A-Frame
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) |
|---|---|---|---|---|---|
| 116.0 gr | 3.640" | 26.0" | 2912 fps | ••• | |
| 100.0 gr | 3.640" | 26.0" | 2671 fps | ••• | |
| 106.0 gr | 3.640" | 26.0" | 2813 fps | ••• | |
| ••• | 3.640" | 26.0" | 2612 fps | ••• | |
| ••• | 3.640" | 26.0" | 2754 fps | ••• | |
| ••• | 3.640" | 26.0" | 2892 fps | ••• | |
| ••• | 3.640" | 26.0" | 2723 fps | ••• | |
| ••• | 3.640" | 26.0" | 2702 fps | ••• | |
| ••• | 3.640" | 26.0" | 2844 fps | ••• | |
| ••• | 3.640" | 26.0" | 2752 fps | ••• | |
| ••• | 3.640" | 26.0" | 2768 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.