Load data for .300 Win. Mag. + 150gr Barnes TTSX BT
The most recommended powders for this combination are ReloadSwiss RS 60.
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 | TTSX BT
Cartridge:.300 Win. Mag. load data
Case Length (L3):2.620" | 66.5 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.590" | 15.0 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:1:12.0
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Community Loads for .300 Win. Mag. + 150gr 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) |
|---|---|---|---|---|---|
| 75.0 gr | 3.325" | 24.0" | 2970 fps | ••• | |
| 79.0 gr | 3.325" | 24.0" | 3144 fps | ••• | |
| 66.6 gr | 3.340" | 24.0" | 2971 fps | ••• | |
| ••• | 3.340" | 24.0" | 3268 fps | ••• | |
| ••• | 3.340" | 24.0" | 3085 fps | ••• | |
| ••• | 3.325" | 24.0" | 2958 fps | ••• | |
| ••• | 3.325" | 24.0" | 3113 fps | ••• | |
| ••• | 3.340" | 24.0" | 3042 fps | ••• | |
| ••• | 3.325" | 24.0" | 3041 fps | ••• | |
| ••• | 3.325" | 24.0" | 2958 fps | ••• | |
| ••• | 3.325" | 24.0" | 3168 fps | ••• | |
| ••• | 3.340" | 24.0" | 3044 fps | ••• | |
| ••• | 3.325" | 24.0" | 3068 fps | ••• | |
| ••• | 3.340" | 24.0" | 2925 fps | ••• | |
| ••• | 3.325" | 24.0" | 2924 fps | ••• | |
| ••• | 3.340" | 24.0" | 3163 fps | ••• | |
| ••• | 3.325" | 24.0" | 2887 fps | ••• | |
| ••• | 3.325" | 24.0" | 3094 fps | ••• | |
| ••• | 3.340" | 24.0" | 2956 fps | ••• | |
| ••• | 3.325" | 24.0" | 2980 fps | ••• | |
| ••• | 3.325" | 24.0" | 3004 fps | ••• | |
| ••• | 3.340" | 24.0" | 3059 fps | ••• | |
| ••• | 3.325" | 24.0" | 3029 fps | ••• | |
| ••• | 3.325" | 24.0" | 3219 fps | ••• | |
| ••• | 3.325" | 24.0" | 3146 fps | ••• | |
| ••• | 3.325" | 24.0" | 2999 fps | ••• | |
| ••• | 3.325" | 24.0" | 3187 fps | ••• | |
| ••• | 3.325" | 24.0" | 3075 fps | ••• | |
| ••• | 3.325" | 24.0" | 2808 fps | ••• | |
| ••• | 3.325" | 24.0" | 2950 fps | ••• | |
| ••• | 3.325" | 24.0" | 3094 fps | ••• | |
| ••• | 3.325" | 24.0" | 3022 fps | ••• | |
| ••• | 3.325" | 24.0" | 3253 fps | ••• | |
| ••• | 3.340" | 24.0" | 3046 fps | ••• | |
| ••• | 3.340" | 24.0" | 3202 fps | ••• | |
| ••• | 3.340" | 22.0" | 3196 fps | ••• | |
| ••• | 3.340" | 24.0" | 2841 fps | ••• | |
| ••• | 3.340" | 24.0" | 3111 fps | ••• | |
| ••• | 3.340" | 24.0" | 2930 fps | ••• | |
| ••• | 3.325" | 24.0" | 2889 fps | ••• | |
| ••• | 3.325" | 24.0" | 3055 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.