The utility model discloses a take single magazine of root edge case shot, including casing [ 1 ], arrange in casing [ 1 ] support diving board [ 2 ], magazine spring [ 3 ], magazine spring base [ 4 ] with arrange bottom [ 5 ] bottom casing [ 1 ] in, casing [ 1 ] is formed by left side board [ 11 ], left side wall [ 12 ], right side board [ 13 ], right side wall [ 14 ] and backplate [ 15 ] welding, respectively being equipped with three on left side wall [ 12 ] and right side wall [ 14 ] and vertically leading to longly to the bellied pressing rib in inboard, the pressing rib on right side wall [ 14 ] is corresponding one by one with the pressing rib on left side wall [ 12 ], two pairs of anterior pressing rib cross sections are the arc, and the distance between two relative pressing rib slightly is greater than cartridge body external diameter, the rectangle of a pair of pressing rib cross section for taking the fillet at rear portion, interval slightly are greater than cartridge body external diameter, and pressing rib's rear end face and backplate [ 15 ] closely slightly are greater than cartridge root edge thickness within a definite time. The utility model discloses a magazine, the use is reliable, the trouble is few.