.300 Savage
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The .300 Savage cartridge is a rimless, .30 caliber rifle cartridge developed by Savage Arms in 1920. Wikipedia
Bullet diameter: .308 in (7.8 mm)
Case capacity: 52.5 gr H2O (3.40 cm3)
Manufacturer: Savage Arms
Maximum pressure (C.I.P.): 52,939 psi (365.00 MPa)
Produced: 1920–present
Rifling twist: 1-10 in