Subsonic ammunication articles having a rigid outer casing or rigid inner core and methods for making the same

摘要

Two methods of making subsonic ammunition articles are provided that size the cavity to the propellant charge. The first method includes molding a core sleeve comprised of a unified neck, cavity sized to the propellant charge volume and a trailing end with an ejector ring, primer seat and flash hole; then, molding a polymer based casing over the core sleeve except the neck and a portion of the trailing end; then, inserting the primer, propellant charge and projectile; thereby, completing a subsonic ammunition article with a rigid core and a polymer casing. The second method includes injection molding a polymer sleeve within the casing of an ammunition article around a core pull positioned within the casing to form a thicker casing wall and a propellant cavity the volume of which corresponds to a desired propellant charge.

主权项

1. A method of making an ammunition article, comprising:
providing a cartridge casing; providing a projectile for being engaged with the cartridge casing; determining a desired propellant charge to achieve one or more characteristic, the one or more characteristic including a desired functional characteristics for the article; selecting a core pull having at least one dimension corresponding to the dimension of a desired propellant charge volume corresponding to the desired functional characteristics for the article; placing the cartridge casing in a mold; inserting the core pull into the cartridge casing; and injection molding, in a mold, a material within an interior circumference of the cartridge casing and around the core pull to form a polymer liner that defines a casing volume for the propellant charge volume after the core pull is removed.