Load data for .300 Win. Mag. + 165gr Barnes TTSX BT
The most recommended powders for this combination are Vihtavuori N550, ReloadSwiss RS 60 and Vihtavuori N160.
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 | TTSX BT
Cartridge:.300 Win. Mag. load data
Case Length (L3):2.620" | 66.5 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.638" | 16.2 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:1:11.5
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Community Loads for .300 Win. Mag. + 165gr Barnes TTSX 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" | 2832 fps | ••• | |
| 71.6 gr | 3.340" | 24.0" | 3108 fps | ••• | |
| 67.6 gr | 3.340" | 24.0" | 2814 fps | ••• | |
| ••• | 3.340" | 24.0" | 3064 fps | ••• | |
| ••• | 3.340" | 24.0" | 2790 fps | ••• | |
| ••• | 3.340" | 24.0" | 3214 fps | ••• | |
| ••• | 3.340" | 24.0" | 2884 fps | ••• | |
| ••• | 3.340" | 24.0" | 2736 fps | ••• | |
| ••• | 3.340" | 24.0" | 2996 fps | ••• | |
| ••• | 3.340" | 24.0" | 2811 fps | ••• | |
| ••• | 3.340" | 24.0" | 2879 fps | ••• | |
| ••• | 3.340" | 26.0" | 3061 fps | ••• | |
| ••• | 3.340" | 22.0" | 3025 fps | ••• | |
| ••• | 3.340" | 24.0" | 2958 fps | ••• | |
| ••• | 3.340" | 24.0" | 2818 fps | ••• | |
| ••• | 3.340" | 22.0" | 3002 fps | ••• | |
| ••• | 3.343" | 20.1" | 2772 fps | ••• | |
| ••• | 3.340" | 22.0" | 3045 fps | ••• | |
| ••• | 3.340" | 22.0" | 3081 fps | ••• | |
| ••• | 3.339" | 25.6" | 2831 fps | ••• | |
| ••• | 3.290" | 16.9" | 2743 fps | ••• | |
| ••• | 3.339" | 25.6" | 2733 fps | ••• | |
| ••• | 3.340" | 22.0" | 2959 fps | ••• | |
| ••• | 3.339" | 25.6" | 3112 fps | ••• | |
| ••• | 3.340" | 22.0" | 3084 fps | ••• | |
| ••• | 3.339" | 25.6" | 2947 fps | ••• | |
| ••• | 3.323" | 24.4" | 2989 fps | ••• | |
| ••• | 3.340" | 24.0" | 2730 fps | ••• | |
| ••• | 3.340" | 24.4" | 2854 fps | ••• | |
| ••• | 3.339" | 24.5" | 2573 fps | ••• | |
| ••• | 3.339" | 24.5" | 2948 fps | ••• | |
| ••• | 3.340" | 24.0" | 2952 fps | ••• | |
| ••• | 3.340" | 24.0" | 2971 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.