Load data for .223 WSSM + 55gr Sierra SBT GameKing
Based on C.I.P., the max. allowed case length is 1.670 in / 42.42 mm, the max. cartridge length is 2.360 in / 59.94 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.
Based on C.I.P., the max. allowed case length is 1.670 in / 42.42 mm, the max. cartridge length is 2.360 in / 59.94 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.
Load Specifications
ImperialMetric
Bullet:.224 | 55gr | SBT GameKing
Cartridge:.223 WSSM load data
Case Length (L3):1.663" | 42.2 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.272" | 6.9 mm
Case Capacity:53.7 gow | 3.48 cm³
Primer Size:Large Rifle (LR)
Max. Pressure (C.I.P.):63,817 psi | 4,400 bar
Barrel Length:24.0" | 610 mm
Min. Twist Rate:1:12.0
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