Load data for .357 SIG + 123gr LOS FP
263 suitable loads across 46 powder(s) for cartridge .357 SIG with 123gr LOS FP bullet.
The most recommended powders for this combination are Vihtavuori 3N37, Alliant UNIQUE and Somchem MP200.
Based on C.I.P., the max. allowed case length is 0.865 in / 21.97 mm, the max. cartridge length is 1.140 in / 28.96 mm, and the max. allowed pressure is 44,237 PSI / 3,050 bar.
Based on C.I.P., the max. allowed case length is 0.865 in / 21.97 mm, the max. cartridge length is 1.140 in / 28.96 mm, and the max. allowed pressure is 44,237 PSI / 3,050 bar.
Load Specifications
ImperialMetric
Bullet:.356 | 123gr | FP
Cartridge:.357 SIG load data
Case Length (L3):0.860" | 21.8 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.304" | 7.7 mm
Case Capacity:19.5 gow | 1.26 cm³
Primer Size:Small Pistol (SP)
Max. Pressure (C.I.P.):44,237 psi | 3,050 bar
Barrel Length:4.5" | 114 mm
Min. Twist Rate:Stabilizes in any common twist
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