Load data for .300 Win. Mag. + 165gr Barnes TSX BT
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 | 165gr | TSX BT
Cartridge:.300 Win. Mag. load data
Case Length (L3):2.620" | 66.5 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.584" | 14.8 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:1:12.0
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Community Loads for .300 Win. Mag. + 165gr Barnes TSX 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) |
|---|---|---|---|---|---|
| 64.4 gr | 3.340" | 24.0" | 2831 fps | ••• | |
| 71.6 gr | 3.340" | 24.0" | 3110 fps | ••• | |
| 67.6 gr | 3.340" | 24.0" | 2782 fps | ••• | |
| ••• | 3.340" | 24.0" | 3085 fps | ••• | |
| ••• | 3.340" | 24.0" | 3026 fps | ••• | |
| ••• | 3.340" | 24.0" | 2790 fps | ••• | |
| ••• | 3.340" | 24.0" | 3173 fps | ••• | |
| ••• | 3.340" | 24.0" | 2850 fps | ••• | |
| ••• | 3.340" | 24.0" | 2738 fps | ••• | |
| ••• | 3.340" | 24.0" | 2995 fps | ••• | |
| ••• | 3.340" | 24.0" | 2783 fps | ••• | |
| ••• | 3.340" | 24.0" | 2881 fps | ••• | |
| ••• | 3.340" | 24.0" | 2929 fps | ••• | |
| ••• | 3.340" | 24.0" | 2819 fps | ••• | |
| ••• | 3.340" | 24.0" | 2915 fps | ••• | |
| ••• | 3.340" | 24.0" | 2942 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.