Load data for .338 Rem. Ultra Mag. + 250gr Speer Grand Slam
Based on C.I.P., the max. allowed case length is 2.760 in / 70.11 mm, the max. cartridge length is 3.600 in / 91.44 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.
Based on C.I.P., the max. allowed case length is 2.760 in / 70.11 mm, the max. cartridge length is 3.600 in / 91.44 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.
Load Specifications
ImperialMetric
Bullet:.338 | 250gr | Grand Slam
Cartridge:.338 Rem. Ultra Mag. load data
Case Length (L3):2.760" | 70.1 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.440" | 11.2 mm
Case Capacity:110 gow | 7.13 cm³
Primer Size:Large Rifle Magnum (LRM)
Max. Pressure (C.I.P.):63,817 psi | 4,400 bar
Barrel Length:24.0" | 610 mm
Min. Twist Rate:1:6.0
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Community Loads for .338 Rem. Ultra 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) |
|---|---|---|---|---|---|
| 89.0 gr | 3.550" | — | 2678 fps | ••• | |
| 93.0 gr | 3.550" | — | 2793 fps | ••• | |
| 83.0 gr | 3.550" | — | 2645 fps | ••• | |
| ••• | 3.550" | — | 2752 fps | ••• | |
| ••• | 3.550" | — | 2691 fps | ••• | |
| ••• | 3.550" | — | 2799 fps | ••• | |
| ••• | 3.550" | — | 2714 fps | ••• | |
| ••• | 3.550" | — | 2616 fps | ••• | |
| ••• | 3.550" | — | 2729 fps | ••• | |
| ••• | 3.550" | — | 2841 fps | ••• | |
| ••• | 3.550" | — | 2718 fps | ••• | |
| ••• | 3.550" | — | 2623 fps | ••• | |
| ••• | 3.550" | — | 2738 fps | ••• | |
| ••• | 3.550" | — | 2690 fps | ••• | |
| ••• | 3.550" | — | 2805 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.