Your ammunition will stay safe and dry in these 22 round flip top ammo boxes made from polypropylene. They are designed for the new short magnums and the large ultra magnums and will not warp, crack, chip, peel, expand or contract. Cartridge Sizes: 300 / 338 RMC, 40-60 Marlin, 40-82 / 45-75 / 50-110 / 50-95 WCF, 45-110 Sharps, 8x56 Rimmed Hungarian, 9.3x62, 9x57, 10.3x60 Swiss, 10.75x65 Rimmed, 11.7 x 51 Rim. Danish Rem.