ALLEN BRIDGER NEXT SHOT CARTRIDGE CARRIER The cartridge carrier is designed to hold 7 cartridges using the elastic cartridge loops. It is sized to fit cartridges ranging from .223 to 300 Winchester Magnum. Cartridge carrier is made of a smooth exterior fabric with soft cheek piece to comfortably rest your cheek on. The carrier is designed with an adjustable strap system to align the cartridge carrier to an easy-access position.