Outer casing member for a bullet

摘要

An outer casing member for bullet is formed of an integral metal material. The outer casing member comprises a cylindrical shaft portion 712 and a cap portion 719 providing continuous from one end of the shaft portion 712. The central portion of the cap portion 719 is protruding outward. The connecting region between the shaft portion 712 and the cap portion 719 has such a shape that when a pressing force is applied to the tip end surface of the shaft portion 712 in a direction from the side of the cap portion 719 to the shaft portion 712, a force is exerted to bend the shaft portion 712 outward so that the cap portion 719 goes of from the shaft portion 712 and the shaft portion 712 is bend outward. <IMAGE>