6.8mm Remington SPC
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The 6.8mm Remington Special Purpose Cartridge is a rimless bottlenecked intermediate rifle cartridge that was developed by Remington Arms in collaboration with members of the U.S. Army Marksmanship Unit ... Wikipedia
Bullet diameter: 7.04 mm
Case capacity: 2.26–2.39 cm3
Designed: 2002–2004
Maximum pressure (C.I.P): 405 MPa
Parent case: .30 Remington