Load data for .338 Rem. Ultra Mag. + 250gr Barnes LRX BT
The most recommended powders for this combination are IMR 4350, Hodgdon H4831 and Winchester StaBALL HD.
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 | LRX BT
Cartridge:.338 Rem. Ultra Mag. load data
Case Length (L3):2.760" | 70.1 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.883" | 22.4 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:1:11.0
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Community Loads for .338 Rem. Ultra Mag. + 250gr Barnes LRX BT
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) |
|---|---|---|---|---|---|
| 87.5 gr | 3.590" | 24.0" | 2644 fps | ••• | |
| 84.5 gr | 3.590" | 24.0" | 2658 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.