Load data for .300 RCM + 180gr Speer Boat-Tail
Based on C.I.P., the max. allowed case length is 2.100 in / 53.34 mm, the max. cartridge length is 2.840 in / 72.14 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.
Based on C.I.P., the max. allowed case length is 2.100 in / 53.34 mm, the max. cartridge length is 2.840 in / 72.14 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.
Load Specifications
ImperialMetric
Bullet:.308 | 180gr | Boat-Tail
Cartridge:.300 RCM load data
Case Length (L3):2.090" | 53.1 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.552" | 14.0 mm
Case Capacity:75 gow | 4.86 cm³
Primer Size:Large Rifle (LR)
Max. Pressure (C.I.P.):63,817 psi | 4,400 bar
Barrel Length:24.0" | 610 mm
Min. Twist Rate:1:13.0
Get PRO license to unlock all data and calculators
Community Loads for .300 RCM + 180gr 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) |
|---|---|---|---|---|---|
| 54.8 gr | 2.820" | — | 2688 fps | ••• | |
| 60.7 gr | 2.820" | — | 2940 fps | ••• | |
| 52.8 gr | 2.820" | — | 2553 fps | ••• | |
| ••• | 2.820" | — | 2795 fps | ••• | |
| ••• | 2.820" | — | 2676 fps | ••• | |
| ••• | 2.820" | — | 2486 fps | ••• | |
| ••• | 2.820" | — | 2718 fps | ••• | |
| ••• | 2.820" | — | 2556 fps | ••• | |
| ••• | 2.820" | — | 2829 fps | ••• | |
| ••• | 2.820" | — | 2624 fps | ••• | |
| ••• | 2.820" | — | 2871 fps | ••• | |
| ••• | 2.820" | — | 2702 fps | ••• | |
| ••• | 2.820" | — | 2872 fps | ••• | |
| ••• | 2.820" | — | 2411 fps | ••• | |
| ••• | 2.820" | — | 2637 fps | ••• | |
| ••• | 2.820" | — | 2470 fps | ••• | |
| ••• | 2.820" | — | 2720 fps | ••• | |
| ••• | 2.820" | — | 2737 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.