Ammo Box #4 50rd .22-250 7.62x39 Fits 50 rounds of the following calibers: .22-250 R. - .22 B.R. - .22 P.P.C. - .22 S. HP - .220 Russian - .224 Wby. Mag - .250 Savage .30/.35 R. - .32-40 W - .350 R. Mag. - .351/.401 WSL - 6mm P.P.C. - 6.8mm R. SPC - 7mm B.R. - .450 Bushmaster - 7.62x39 Russian Base and Cover moulded separately Hinged opening system 30 Year Guaranteed The list of calibers is moulded on the bottom of the base too. Can be stacked