SmartReloader ammo boxes are made from high quality plastic with the best technology available to make sure your ammunition is stored properly. Our ammo boxes are not only storing boxes, they will also work great at the range. They will stay open from the first time you use them thanks to the hinge that connects the cover to the base. Moreover, most of the non-hinged ammo boxes in the market have a limited life due to the plastic hinge (that connects the cover and the base) which will eventually break with continued use. SmartReloader Ammo Boxes will last virtually forever and give you the best quality available at the best price. We guarantee for 10 millions openings. Fits 36 rounds .240 Wby. Mag.-.25-06 R.-.257 Roberts-.270 W.-.280 R.-.30-06 Springfield-.338-06 A-Square-.35 Whelen-6.5-06 A-Square-6.5x54mm Mannlicher Schoenauer-6.5x55 Swedish-7x64 Brenneke-7x57/8x57/9.3x57/9.5x57/9.3x62 Mauser-7.7x58 Jap.-8mm-06. IN THE BULLET DOWN POSITION: .260 R.-.257/.300/.340/7mm Wby. Mag.-.264/.338/.458 W. Mag.-.300/.338 Win. Mag.-.300/.375 HandH-.303 British-.308/.358 Norma Mag.-.40-70 S-.40-82-.405 W.-.444 Marlin-.45-100-6.5-284 Lapua-6.5x52 Italian-7x61 SandH-7mm/8mm R. Mag.-7mm STW-7.5X54 Swiss-7.62x54 R.-.410 Shotshell