7mm Remington Magnum:The 7mm Remington Magnum is a .28″ caliber, belted, bottleneck cartridge case design, centerfire rifle cartridge. The 7mm Remington Magnum cartridge casing is re-loadable after the cartridge has been fired or spent with various combinations of primer, powder and .284″ diameter bullets. 7mm Remington Magnum Cartridge: Cartridge Type: Centerfire Rifle. Bullet Diameter: .284″. […]