Load data for .458 SOCOM + 405gr Prvi Partizan SJ FP
14 suitable loads across 4 powder(s) for cartridge .458 SOCOM with 405gr Prvi Partizan SJ FP bullet.
The most recommended powders for this combination are Vihtavuori N120, ReloadSwiss RS 14 and Hodgdon TrailBoss.
Based on CIP, the max. allowed case length is 1.580 in / 40.13 mm, the max. cartridge length is 2.250 in / 57.15 mm, and the max. allowed pressure is 35,001 PSI / 2,413 bar.
Based on CIP, the max. allowed case length is 1.580 in / 40.13 mm, the max. cartridge length is 2.250 in / 57.15 mm, and the max. allowed pressure is 35,001 PSI / 2,413 bar.
Load Specifications
ImperialMetric
Bullet:.458 | 405gr | SJ FP
Cartridge:.458 SOCOM load data
Case Length (L3):1.575" | 40.0 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.458" | 11.6 mm
Case Capacity:63 gow | 4.08 cm³
Primer Size:Large Pistol (LP)
Max. Pressure (CIP):35,001 psi | 2,413 bar
Barrel Length:16.0" | 406 mm
Min. Twist Rate:Stabilizes in any common twist
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