Load data for 7 mm Backcountry + 150gr Sierra GameKing
Based on SAAMI, the max. allowed case length is 2.417 in / 61.39 mm, the max. cartridge length is 3.340 in / 84.84 mm, and the max. allowed pressure is 79,916 PSI / 5,510 bar.
Based on SAAMI, the max. allowed case length is 2.417 in / 61.39 mm, the max. cartridge length is 3.340 in / 84.84 mm, and the max. allowed pressure is 79,916 PSI / 5,510 bar.
Load Specifications
ImperialMetric
Bullet:.284 | 150gr | GameKing
Cartridge:7 mm Backcountry load data
Case Length (L3):2.417" | 61.4 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.424" | 10.8 mm
Case Capacity:73 gow | 4.73 cm³
Primer Size:Large Rifle (LR)
Max. Pressure (SAAMI):79,916 psi | 5,510 bar
Barrel Length:20.0" | 508 mm
Min. Twist Rate:1:12.0
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