SMALL-CALIBER NONTOXIC PIERCING-ACTION SHELL Russian patent published in 2004 - IPC

FIELD: ammunition. SUBSTANCE: the shell has the first core and the second core successively aligned with the first core, the hardness of the first core exceeds the hardness of the second core, and on outer body covering the first and second cores, the outer body has an ogival head adjoining the first core and a rear part chamfered at an angle and adjoining the second core, and a cylindrical side wall located between the ogival head and the rear part chamfered at an angle, the second core has a Brinell hardness within approximately 20 to approximately 50 and selected from a group containing copper, copper alloys, alloys of bismuth and tin, silver, gold, pewter and organic polymers with compounded heavy metal. The method provides for production of a blank of the outer body, having an ogival head and side walls limiting the cavity, the first core os worked with bringing its hardness to the second value, which is lower than the hardness of the first core, the first and second cores are successively introduced in the mentioned cavity, in which the first core adjoins the ogival head, and the mentioned blank of the outer body is mechanically deformed for attachment of the first and second cores inside the cavity, forming the rear part chamfered at an angle and adjoining the second core, the Brinell hardness of the second core makes up approximately 15 to approximately 60. EFFECT: enhanced piercing effect of the shell and reduced its harmful action on the environment. 14 cl, 8 dwg, 1 ex