These Case-Gard ammo boxes are made of virtually indestructible polypropylene that will not warp, crack, chip, peel, expand or contract. Each box holds 50 rounds in individual compartments. The mechanical hinge and Snap-Lok latch protects contents from accidental spilling while the textured finish makes it easy to grip and scratch-resistant. Each Case-Gard R-50 series ammo box is supplied with a load label for recording load and sight data. Calibers-OAL 3.85″ 26/28/30/33 Nosler, 260 Rem., 6.5-08 A-Square, 257/270/300/ 338-378/340/375/6.5-300/7mm Wby. Mag., 264/300/330/338/458 Win. Mag., 300/375 H&H Mag., 300/338/375/7mm/Rem. Ultra Mag., 30 Super Flanged, 300/330/375/416 Dakota, 300 PRC, 303 Brit., 308/358 Norma Mag., 358 STA, 25-284/38-72/405 Win., 400/400-350 Nitro Exp, 400-360 Thin Rim Purdey, 404 Jeffery, 40-65 Sharps Str., 444 Marlin, 375 Ruger, 6.5-284 Norma, 6.53 Scramjet, 6.5×52 Ital., 6.5×57 Rimmed, 7.21 Firebird, 7mm Rigby, 7×61 S&H, 416/6.5/7mm 8mm Rem. Mag., 416 Taylor, 458 Lott, 6.17 Spitfire, 7mm STW, 7.5x 54 Swiss, 7.62x54R, 8×64 Brenneke, 8×65 Rimmed, 8x68S Mag., 9.3×74 9.3×82 Rimmed, 9.5×57, 10.75×68 Mauser. Bullet Down: 280 Flanged Nitro Express, 378 Wby. Mag., 338 Lapua Mag., 416 Rigby, 500 Nitro, 6.5 x 58 Rimmed, 7.82 Warbird, 8.59 Titan.