Load data for .338 RCM + 225gr Speer Boat-Tail
Based on C.I.P., the max. allowed case length is 2.015 in / 51.18 mm, the max. cartridge length is 2.840 in / 72.14 mm, and the max. allowed pressure is 62,366 PSI / 4,300 bar.

Based on C.I.P., the max. allowed case length is 2.015 in / 51.18 mm, the max. cartridge length is 2.840 in / 72.14 mm, and the max. allowed pressure is 62,366 PSI / 4,300 bar.

Load Specifications
ImperialMetric
Bullet:.338 | 225gr | Boat-Tail
Cartridge:.338 RCM load data
Case Length (L3):2.000" | 50.8 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.470" | 11.9 mm
Case Capacity:71 gow | 4.60 cm³
Primer Size:Large Rifle (LR)
Max. Pressure (C.I.P.):62,366 psi | 4,300 bar
Barrel Length:24.0" | 610 mm
Min. Twist Rate:1:15.0
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Community Loads for .338 RCM + 225gr Speer Boat-Tail
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) |
|---|---|---|---|---|---|
| 53.6 gr | 2.840" | — | 2413 fps | ••• | |
| 52.1 gr | 2.840" | — | 2469 fps | ••• | |
| 57.5 gr | 2.840" | — | 2708 fps | ••• | |
| ••• | 2.840" | — | 2378 fps | ••• | |
| ••• | 2.840" | — | 2600 fps | ••• | |
| ••• | 2.840" | — | 2437 fps | ••• | |
| ••• | 2.840" | — | 2696 fps | ••• | |
| ••• | 2.840" | — | 2283 fps | ••• | |
| ••• | 2.840" | — | 2531 fps | ••• | |
| ••• | 2.840" | — | 2628 fps | ••• | |
| ••• | 2.840" | — | 2431 fps | ••• | |
| ••• | 2.840" | — | 2674 fps | ••• | |
| ••• | 2.840" | — | 2340 fps | ••• | |
| ••• | 2.840" | — | 2543 fps | ••• | |
| ••• | 2.840" | — | 2325 fps | ••• | |
| ••• | 2.840" | — | 2537 fps | ••• | |
| ••• | 2.840" | — | 2408 fps | ••• | |
| ••• | 2.840" | — | 2637 fps | ••• | |
| ••• | 2.840" | — | 2413 fps | ••• | |
| ••• | 2.840" | — | 2647 fps | ••• | |
| ••• | 2.840" | — | 2299 fps | ••• | |
| ••• | 2.840" | — | 2540 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.