Load data for .257 Weath. Mag. + 115gr Barnes TSX BT
Based on C.I.P., the max. allowed case length is 2.549 in / 64.74 mm, the max. cartridge length is 3.209 in / 81.51 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.
Based on C.I.P., the max. allowed case length is 2.549 in / 64.74 mm, the max. cartridge length is 3.209 in / 81.51 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.
Load Specifications
ImperialMetric
Bullet:.257 | 115gr | TSX BT
Cartridge:.257 Weath. Mag. load data
Case Length (L3):2.549" | 64.7 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.586" | 14.9 mm
Case Capacity:84 gow | 5.44 cm³
Primer Size:Large Rifle Magnum (LRM)
Max. Pressure (C.I.P.):63,817 psi | 4,400 bar
Barrel Length:26.0" | 660 mm
Min. Twist Rate:1:9.0
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Community Loads for .257 Weath. Mag. + 115gr 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) |
|---|---|---|---|---|---|
| 61.9 gr | 3.160" | 26.0" | 2993 fps | ••• | |
| 68.8 gr | 3.160" | 26.0" | 3304 fps | ••• | |
| 67.0 gr | 3.250" | 26.0" | 3073 fps | ••• | |
| ••• | 3.170" | 24.0" | 3050 fps | ••• | |
| ••• | 3.250" | 26.0" | 3281 fps | ••• | |
| ••• | 3.250" | 26.0" | 3245 fps | ••• | |
| ••• | 3.250" | 26.0" | 2943 fps | ••• | |
| ••• | 3.250" | 26.0" | 3126 fps | ••• | |
| ••• | 3.170" | 24.0" | 2892 fps | ••• | |
| ••• | 3.170" | 24.0" | 3086 fps | ••• | |
| ••• | 3.160" | 26.0" | 2810 fps | ••• | |
| ••• | 3.160" | 26.0" | 3169 fps | ••• | |
| ••• | 3.160" | 26.0" | 2874 fps | ••• | |
| ••• | 3.170" | 24.0" | 2975 fps | ••• | |
| ••• | 3.160" | 26.0" | 3208 fps | ••• | |
| ••• | 3.170" | 24.0" | 3161 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.