Load data for .300 Win. Mag. + 150gr Speer Hot-Cor
Based on C.I.P., the max. allowed case length is 2.620 in / 66.55 mm, the max. cartridge length is 3.340 in / 84.84 mm, and the max. allowed pressure is 62,366 PSI / 4,300 bar.

Based on C.I.P., the max. allowed case length is 2.620 in / 66.55 mm, the max. cartridge length is 3.340 in / 84.84 mm, and the max. allowed pressure is 62,366 PSI / 4,300 bar.

Load Specifications
ImperialMetric
Bullet:.308 | 150gr | Hot-Cor
Cartridge:.300 Win. Mag. load data
Case Length (L3):2.620" | 66.5 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.472" | 12.0 mm
Case Capacity:90.5 gow | 5.86 cm³
Primer Size:Large Rifle Magnum (LRM)
Max. Pressure (C.I.P.):62,366 psi | 4,300 bar
Barrel Length:24.0" | 610 mm
Min. Twist Rate:1:16.0
Get PRO license to unlock all data and calculators
Community Loads for .300 Win. Mag. + 150gr Speer Hot-Cor
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) |
|---|---|---|---|---|---|
| 69.0 gr | 3.130" | — | 2995 fps | ••• | |
| 76.0 gr | 3.130" | — | 2915 fps | ••• | |
| 80.0 gr | 3.130" | — | 3068 fps | ••• | |
| ••• | 3.130" | — | 2991 fps | ••• | |
| ••• | 3.130" | — | 3030 fps | ••• | |
| ••• | 3.130" | — | 2978 fps | ••• | |
| ••• | 3.130" | — | 3256 fps | ••• | |
| ••• | 3.130" | — | 2984 fps | ••• | |
| ••• | 3.130" | — | 3141 fps | ••• | |
| ••• | 3.130" | — | 2955 fps | ••• | |
| ••• | 3.130" | — | 3115 fps | ••• | |
| ••• | 3.130" | — | 2886 fps | ••• | |
| ••• | 3.130" | — | 3174 fps | ••• | |
| ••• | 3.130" | — | 2908 fps | ••• | |
| ••• | 3.130" | — | 3244 fps | ••• | |
| ••• | 3.130" | — | 2881 fps | ••• | |
| ••• | 3.130" | — | 3051 fps | ••• | |
| ••• | 3.130" | — | 2922 fps | ••• | |
| ••• | 3.130" | — | 3073 fps | ••• | |
| ••• | 3.130" | — | 2936 fps | ••• | |
| ••• | 3.130" | — | 3114 fps | ••• | |
| ••• | 3.130" | — | 2948 fps | ••• | |
| ••• | 3.130" | — | 3108 fps | ••• | |
| ••• | 3.130" | — | 2897 fps | ••• | |
| ••• | 3.130" | — | 3047 fps | ••• | |
| ••• | 3.130" | — | 3025 fps | ••• | |
| ••• | 3.130" | — | 3170 fps | ••• | |
| ••• | 3.130" | — | 3056 fps | ••• | |
| ••• | 3.130" | — | 3198 fps | ••• | |
| ••• | 3.130" | — | 2896 fps | ••• | |
| ••• | 3.130" | — | 3088 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.