Load data for .30-378 Weath. Mag. + 165gr Speer Boat-Tail
Based on C.I.P., the max. allowed case length is 2.913 in / 73.99 mm, the max. cartridge length is 3.750 in / 95.25 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 3.750 in / 95.25 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.
Load Specifications
ImperialMetric
Bullet:.308 | 165gr | Boat-Tail
Cartridge:.30-378 Weath. Mag. load data
Case Length (L3):2.913" | 74.0 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.457" | 11.6 mm
Case Capacity:133 gow | 8.62 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:1:13.5
Get PRO license to unlock all data and calculators
Community Loads for .30-378 Weath. Mag. + 165gr Speer Boat-Tail
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) |
|---|---|---|---|---|---|
| 97.0 gr | 3.645" | — | 3072 fps | ••• | |
| 101.0 gr | 3.645" | — | 3172 fps | ••• | |
| 99.0 gr | 3.645" | — | 3263 fps | ••• | |
| ••• | 3.645" | — | 3278 fps | ••• | |
| ••• | 3.645" | — | 3112 fps | ••• | |
| ••• | 3.645" | — | 3282 fps | ••• | |
| ••• | 3.645" | — | 3057 fps | ••• | |
| ••• | 3.645" | — | 3169 fps | ••• | |
| ••• | 3.645" | — | 3137 fps | ••• | |
| ••• | 3.645" | — | 3237 fps | ••• | |
| ••• | 3.645" | — | 3193 fps | ••• | |
| ••• | 3.645" | — | 3220 fps | ••• | |
| ••• | 3.645" | — | 3337 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.