Specially designed for shooters who require a 100 round supply of very accurate ammunition (such as big bore, varmint hunters, etc.) The R-100 provides excellent protection for reloads and when the rounds are in the down position, they are protected by four special fingers which keep your bullets from hitting the bottom of the box and causing tip damage (which can change flight characteristics). It comes with adjustable inner trays which offer two height positions for different cartridge lengths. For cartridge sizes: 22BR / 22 Cheetah, 22 PPC, 22 Sav. HP, 220 Rus., 220 Swift, 22-250 Rem., 224 Wby. Mag., 224 Clark, 225 / 243 / 270 / 284 / 307 / 308 / 356 / 6mm-284 Win., 250 Sav., 25 / 25-06 / 30 / 35 Rem., 25-35 WCF, 25-284 Win., 28-30 Sevens, 30 T/C, 300 / 303 Sav., 30-06 Spr., 30-30 Win., 30-40 Krag., 308 Marlin Exp., 32-40 Win., 32 / 401 Win. S.L., 32 Win. Spl., 338 Fed., 35 Whelen, 376 Steyr, 38-55 Win., 360 Nitro Exp. 2 1/4", 375 Rimless 2 1/4", 400-375 Belted Nitro Exp., 5.6 x 52 Rimmed, 6.5 Carcano, 6.5 Creedmoor, 6.5-284 LAPUA, 6.5x50 Jap. Arisaka, 6.5x52 Italian, 6.5x54mm Mann-Schoen., 6.5x55mm Swedish, 6.5x257 Roberts, 6.5-284 Norma, 6.8mm Rem.Spl. 6mm BR-DX, 6mm Norma BR, 8mm Rem. Spl., 6mm PPC USA, 6mm Rem., 7.35 Carcano, 7.5x54 French MAS., 7.5x55 Swiss, 65x53 Mauser, 7.7 Jap., 7.7x58 Jap., 7mm BR, 7mm-08 Rem., 8x57J, 9x57 Norma, 9.3x74, 10.75x68 Mauser, 410 Shotshells