Load data for .30-378 Weath. Mag. + 150gr Speer Grand Slam
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 | 150gr | Grand Slam
Cartridge:.30-378 Weath. Mag. load data
Case Length (L3):2.913" | 74.0 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.288" | 7.3 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:1:16.0
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Community Loads for .30-378 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) |
|---|---|---|---|---|---|
| 100.0 gr | 3.645" | — | 3173 fps | ••• | |
| 104.0 gr | 3.645" | — | 3275 fps | ••• | |
| 97.0 gr | 3.645" | — | 3367 fps | ••• | |
| ••• | 3.645" | — | 3342 fps | ••• | |
| ••• | 3.645" | — | 3449 fps | ••• | |
| ••• | 3.645" | — | 3392 fps | ••• | |
| ••• | 3.645" | — | 3257 fps | ••• | |
| ••• | 3.645" | — | 3374 fps | ••• | |
| ••• | 3.645" | — | 3125 fps | ••• | |
| ••• | 3.645" | — | 3241 fps | ••• | |
| ••• | 3.645" | — | 3301 fps | ••• | |
| ••• | 3.645" | — | 3283 fps | ••• | |
| ••• | 3.645" | — | 3383 fps | ••• | |
| ••• | 3.645" | — | 3326 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.