The J-20 series ammo case is a favorite of rifle enthusiasts throughout the world. It is made of indestructible polypropylene that will not warp crack chip peel expand or contract. Calibers: 220 Swift 224 Clark 225/25-284/270/284/307/308/356 Win. 240 Wby. Mag. 25-06/244/280/6mm/7mm-08mm Rem. 257 Roberts 30-06 Spr. 30-30 Win. 30-40 Krag. 308 Marlin Exp. 360 Nitro Express 2 1/4 375 Rimless 2 1/4 32 Win. Spl. 338 Fed. 35 Whelen 350 Legend 376 Steyr 444 Marlin 400-375 Belterd Nitro Exp. 6.5 Carcano 6/6.5 Creedmoor 6.5×257 Roberts 6.5-284 Lapua 6.5×50 Jap. Arisaka 6.5×52 Italian 6.5x54mm Mann-Schoen 6.5x55mm Swedish 6.5-06 A-Square 6.5-284 Norma 6mm-284 Win. 7×57/7.65×53/9.3x57mm/10.75×68 Mauser 7×64 Brenneke 7.5×55 Swiss 7.7×58 Jap. 7-30 Waters 7.35 Carcano 7.5 Schmidt Rubin Swiss 7.5×54 French MAS 7.5×55 Swiss 7.7×58 Jap. 7-30 Waters 8x57J 8mm-06 9.3×74 9.3×62 9.5×57.