Load data for .357 Mag. + 125gr Sierra Sports Master
Based on C.I.P., the max. allowed case length is 1.290 in / 32.77 mm, the max. cartridge length is 1.590 in / 40.39 mm, and the max. allowed pressure is 43,511 PSI / 3,000 bar.
Based on C.I.P., the max. allowed case length is 1.290 in / 32.77 mm, the max. cartridge length is 1.590 in / 40.39 mm, and the max. allowed pressure is 43,511 PSI / 3,000 bar.
Load Specifications
ImperialMetric
Bullet:.355 | 125gr | Sports Master
Cartridge:.357 Mag. load data
Case Length (L3):1.290" | 32.8 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.257" | 6.5 mm
Case Capacity:25.6 gow | 1.66 cm³
Primer Size:Small Pistol Magnum (SPM)
Max. Pressure (C.I.P.):43,511 psi | 3,000 bar
Barrel Length:6.0" | 152 mm
Min. Twist Rate:Stabilizes in any common twist
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Community Loads for .357 Mag. + 125gr Sierra Sports Master
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) |
|---|---|---|---|---|---|
| 15.4 gr | 1.590" | 5.6" | 1511 fps | ••• | |
| 16.1 gr | 1.590" | 5.6" | 1579 fps | ••• | |
| 16.4 gr | 1.590" | 5.6" | 1608 fps | ••• | |
| ••• | 1.590" | 5.6" | 1639 fps | ••• | |
| ••• | 1.590" | 5.6" | 1472 fps | ••• | |
| ••• | 1.590" | 5.6" | 1583 fps | ••• | |
| ••• | 1.590" | 5.6" | 1634 fps | ••• | |
| ••• | 1.590" | 5.6" | 1695 fps | ••• | |
| ••• | 1.575" | 7.0" | 1500 fps | ••• | |
| ••• | 1.575" | 7.0" | 1808 fps | ••• | |
| ••• | 1.575" | 7.0" | 1554 fps | ••• | |
| ••• | 1.575" | 7.0" | 1560 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.