Load data for .338 Lapua Mag. + 300gr Nosler Custom Competition
The most recommended powders for this combination are Alliant Reloder-33.
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
Cartridge:.338 Lapua Mag. load data
Case Length (L3):2.724" | 69.2 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.799" | 20.3 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:1:12.0
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Community Loads for .338 Lapua Mag. + 300gr Nosler Custom Competition
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) |
|---|---|---|---|---|---|
| 85.0 gr | 3.650" | 24.0" | 2562 fps | ••• | |
| 84.0 gr | 3.650" | 24.0" | 2507 fps | ••• | |
| 86.0 gr | 3.650" | 24.0" | 2557 fps | ••• | |
| ••• | 3.650" | 24.0" | 2490 fps | ••• | |
| ••• | 3.650" | 24.0" | 2549 fps | ••• | |
| ••• | 3.650" | 24.0" | 2463 fps | ••• | |
| ••• | 3.650" | 24.0" | 2508 fps | ••• | |
| ••• | 3.650" | 24.0" | 2565 fps | ••• | |
| ••• | 3.650" | 24.0" | 2466 fps | ••• | |
| ••• | 3.650" | 24.0" | 2519 fps | ••• | |
| ••• | 3.650" | 24.0" | 2574 fps | ••• | |
| ••• | 3.650" | 24.0" | 2468 fps | ••• | |
| ••• | 3.650" | 24.0" | 2520 fps | ••• | |
| ••• | 3.650" | 24.0" | 2530 fps | ••• | |
| ••• | 3.650" | 24.0" | 2585 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.