Load data for .357 Mag. + 158gr Hornady XTP
The most recommended powders for this combination are Hodgdon H110 and Hodgdon TiteGroup.
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:.357 | 158gr | XTP
Cartridge:.357 Mag. load data
Case Length (L3):1.290" | 32.8 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.416" | 10.6 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. + 158gr Hornady XTP
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) |
|---|---|---|---|---|---|
| 14.5 gr | 1.580" | 18.5" | 1625 fps | ••• | |
| 9.0 gr | 1.590" | 8.0" | 1470 fps | ••• | |
| 9.5 gr | 1.590" | 8.0" | 1529 fps | ••• | |
| ••• | 1.580" | 18.5" | 1702 fps | ••• | |
| ••• | 1.575" | 5.9" | 1025 fps | ••• | |
| ••• | 1.580" | — | 1093 fps | ••• | |
| ••• | 1.580" | — | 1312 fps | ••• | |
| ••• | 1.590" | 7.0" | 1240 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.