Load data for .378 Weath. Mag. + 350gr Barnes TSX FB
Based on C.I.P., the max. allowed case length is 2.913 in / 73.99 mm, the max. cartridge length is 3.655 in / 92.84 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 3.655 in / 92.84 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.

Load Specifications
ImperialMetric
Bullet:.375 | 350gr | TSX FB
Cartridge:.378 Weath. Mag. load data
Case Length (L3):2.913" | 74.0 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.974" | 24.7 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
Get PRO license to unlock all data and calculators
Community Loads for .378 Weath. Mag. + 350gr Barnes TSX FB
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) |
|---|---|---|---|---|---|
| 93.0 gr | 3.630" | 25.0" | 2479 fps | ••• | |
| 88.0 gr | 3.630" | 25.0" | 2483 fps | ••• | |
| 96.0 gr | 3.630" | 25.0" | 2571 fps | ••• | |
| ••• | 3.630" | 25.0" | 2633 fps | ••• | |
| ••• | 3.630" | 25.0" | 2503 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.