Load data for 7 mm Backcountry + 138gr TWENTY-NINE ERTP
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Load Specifications
ImperialMetric
Bullet:.284 | 138gr | ERTP
Cartridge:7 mm Backcountry load data
Case Length (l3):2.417" | 61.4 mm
Cartridge Length (C.O.L.):•••
Seated Depth:0.521" | 13.2 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
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