Load data for .357 Auto Mag. + 125gr H&N RN KB
150 suitable loads across 26 powder(s) for cartridge .357 Auto Mag. with 125gr H&N RN KB bullet.
The most recommended powders for this combination are Vihtavuori N32C Tin Star, ReloadSwiss RS 14 and Hodgdon TrailBoss.
Based on C.I.P., the max. allowed case length is 1.299 in / 33.00 mm, the max. cartridge length is 1.600 in / 40.65 mm, and the max. allowed pressure is 36,985 PSI / 2,550 bar.
Based on C.I.P., the max. allowed case length is 1.299 in / 33.00 mm, the max. cartridge length is 1.600 in / 40.65 mm, and the max. allowed pressure is 36,985 PSI / 2,550 bar.
Load Specifications
ImperialMetric
Bullet:.356 | 125gr | RN KB
Cartridge:.357 Auto Mag. load data
Case Length (L3):1.299" | 33.0 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.321" | 8.2 mm
Case Capacity:35 gow | 2.27 cm³
Primer Size:Small Pistol Magnum (SPM)
Max. Pressure (C.I.P.):36,985 psi | 2,550 bar
Barrel Length:6.5" | 165 mm
Min. Twist Rate:Stabilizes in any common twist
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