Load data for .300 Weath. Mag. + 180gr Barnes TTSX BT
The most recommended powders for this combination are Hodgdon H4831 and Hodgdon H4831 SC.
Based on C.I.P., the max. allowed case length is 2.825 in / 71.75 mm, the max. cartridge length is 3.560 in / 90.42 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.

Based on C.I.P., the max. allowed case length is 2.825 in / 71.75 mm, the max. cartridge length is 3.560 in / 90.42 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.

Load Specifications
ImperialMetric
Bullet:.308 | 180gr | TTSX BT
Cartridge:.300 Weath. Mag. load data
Case Length (L3):2.824" | 71.7 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.659" | 16.7 mm
Case Capacity:98.9 gow | 6.41 cm³
Primer Size:Large Rifle Magnum (LRM)
Max. Pressure (C.I.P.):63,817 psi | 4,400 bar
Barrel Length:24.0" | 610 mm
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Community Loads for .300 Weath. Mag. + 180gr 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) |
|---|---|---|---|---|---|
| 82.0 gr | 3.560" | 24.0" | 2954 fps | ••• | |
| 77.0 gr | 3.560" | 24.0" | 2950 fps | ••• | |
| 79.0 gr | 3.560" | 24.0" | 2935 fps | ••• | |
| ••• | 3.560" | 24.0" | 3000 fps | ••• | |
| ••• | 3.560" | 24.0" | 2989 fps | ••• | |
| ••• | 3.560" | 24.0" | 2949 fps | ••• | |
| ••• | 3.560" | 24.0" | 2951 fps | ••• | |
| ••• | 3.560" | 24.0" | 2833 fps | ••• | |
| ••• | 3.570" | 26.0" | 3087 fps | ••• | |
| ••• | 3.560" | 24.0" | 2940 fps | ••• | |
| ••• | 3.560" | 24.0" | 2957 fps | ••• | |
| ••• | 3.560" | 24.0" | 2914 fps | ••• | |
| ••• | 3.560" | 24.0" | 3100 fps | ••• | |
| ••• | 3.560" | 24.0" | 2986 fps | ••• | |
| ••• | 3.560" | 24.0" | 2888 fps | ••• | |
| ••• | 3.560" | 24.0" | 2981 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.