Patent ID: 9032855
Filing Date: 2015-05-19
Classification: F42B

Abstract:
1. A method of making an ammunition article, comprising: providing a projectile having at least one portion that defines a texturing, wherein the texturing extends from a rear facing portion of the projectile to a medial portion of the projectile; determining a desired propellant charge for the projectile in order to achieve one or more characteristics, the one or more characteristics including a subsonic ammunition fire for the projectile; selecting a core pull having at least one dimension corresponding to a dimension of a desired propellant charge volume corresponding to the subsonic ammunition fire for the projectile; injection molding a polymer material in a mold around the core pull and a portion of the projectile to form a casing, the injection molding covering the texturing, wherein the portion of the projectile forward of the casing neck is free of texturing, the texturing being provided for projectile pull tension and for preventing a dielock condition when the texturing is injection molded around; and removing the core pull to define a propellant charge cavity within the casing, the propellant charge cavity having a volume corresponding to the desired propellant charge volume.