Load data for .338 Lapua Mag. + 250gr Speer Grand Slam
Based on C.I.P., the max. allowed case length is 2.724 in / 69.20 mm, the max. cartridge length is 3.681 in / 93.50 mm, and the max. allowed pressure is 60,916 PSI / 4,200 bar.
Based on C.I.P., the max. allowed case length is 2.724 in / 69.20 mm, the max. cartridge length is 3.681 in / 93.50 mm, and the max. allowed pressure is 60,916 PSI / 4,200 bar.
Load Specifications
ImperialMetric
Bullet:.338 | 250gr | Grand Slam
Cartridge:.338 Lapua Mag. load data
Case Length (L3):2.724" | 69.2 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.444" | 11.3 mm
Case Capacity:114 gow | 7.39 cm³
Primer Size:Large Rifle Magnum (LRM)
Max. Pressure (C.I.P.):60,916 psi | 4,200 bar
Barrel Length:24.0" | 610 mm
Min. Twist Rate:1:6.0
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Community Loads for .338 Lapua Mag. + 250gr 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) |
|---|---|---|---|---|---|
| 78.0 gr | 3.510" | — | 2446 fps | ••• | |
| 85.5 gr | 3.510" | — | 2637 fps | ••• | |
| 90.4 gr | 3.510" | — | 2682 fps | ••• | |
| ••• | 3.510" | — | 2684 fps | ••• | |
| ••• | 3.510" | — | 2608 fps | ••• | |
| ••• | 3.510" | — | 2849 fps | ••• | |
| ••• | 3.510" | — | 2502 fps | ••• | |
| ••• | 3.510" | — | 2756 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.