Load data for .338 Rem. Ultra Mag. + 250gr Sierra GameKing
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 | GameKing
Cartridge:.338 Rem. Ultra Mag. load data
Case Length (L3):2.760" | 70.1 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.649" | 16.5 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:1:14.0
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Community Loads for .338 Rem. Ultra Mag. + 250gr Sierra GameKing
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) |
|---|---|---|---|---|---|
| 75.5 gr | 3.600" | 24.0" | 2423 fps | ••• | |
| 79.4 gr | 3.600" | 24.0" | 2526 fps | ••• | |
| 81.2 gr | 3.600" | 24.0" | 2570 fps | ••• | |
| ••• | 3.600" | 24.0" | 2613 fps | ••• | |
| ••• | 3.600" | 24.0" | 2606 fps | ••• | |
| ••• | 3.600" | 24.0" | 2655 fps | ••• | |
| ••• | 3.600" | 24.0" | 2697 fps | ••• | |
| ••• | 3.600" | 24.0" | 2740 fps | ••• | |
| ••• | 3.600" | 24.0" | 2623 fps | ••• | |
| ••• | 3.600" | 24.0" | 2679 fps | ••• | |
| ••• | 3.600" | 24.0" | 2728 fps | ••• | |
| ••• | 3.600" | 24.0" | 2767 fps | ••• | |
| ••• | 3.600" | 24.0" | 2439 fps | ••• | |
| ••• | 3.600" | 24.0" | 2554 fps | ••• | |
| ••• | 3.600" | 24.0" | 2612 fps | ••• | |
| ••• | 3.600" | 24.0" | 2669 fps | ••• | |
| ••• | 3.600" | 24.0" | 2393 fps | ••• | |
| ••• | 3.600" | 24.0" | 2484 fps | ••• | |
| ••• | 3.600" | 24.0" | 2560 fps | ••• | |
| ••• | 3.600" | 24.0" | 2593 fps | ••• | |
| ••• | 3.600" | 24.0" | 2625 fps | ••• | |
| ••• | 3.600" | 24.0" | 2436 fps | ••• | |
| ••• | 3.600" | 24.0" | 2539 fps | ••• | |
| ••• | 3.600" | 24.0" | 2585 fps | ••• | |
| ••• | 3.600" | 24.0" | 2625 fps | ••• | |
| ••• | 3.600" | 24.0" | 2453 fps | ••• | |
| ••• | 3.600" | 24.0" | 2543 fps | ••• | |
| ••• | 3.600" | 24.0" | 2589 fps | ••• | |
| ••• | 3.600" | 24.0" | 2635 fps | ••• | |
| ••• | 3.600" | 24.0" | 2678 fps | ••• | |
| ••• | 3.600" | 24.0" | 2428 fps | ••• | |
| ••• | 3.600" | 24.0" | 2532 fps | ••• | |
| ••• | 3.600" | 24.0" | 2583 fps | ••• | |
| ••• | 3.600" | 24.0" | 2633 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.