Method of making polymer ammunition having a wicking texturing

A method of making a polymeric ammunition having wicking texturing comprising the steps of:

• molding a primer insert by injection molding by injecting a feed stock into a primer insert injection mold, wherein the primer insert comprising a top surface opposite a bottom surface and a coupling element that extends from the bottom surface, wherein the coupling element forms an outer surface opposite an inner circumferential surface, a primer recess in the top surface that extends toward the bottom surface, a primer flash aperture positioned in the primer recess to extend through the bottom surface, a primer flash aperture groove positioned in the primer recess around the primer flash aperture, and a locking groove that extends circumferentially about the top surface;
• molding from a first polymer composition a polymer ammunition cartridge by overmolding a polymeric middle body having the primer insert at a first end and a polymeric coupling region at a second end, wherein the first polymer composition is overmolded and extends over an outer surface of the primer insert to the flange and extends over an interior surface of the coupling region to the primer flash hole aperture, wherein the first polymer composition extends from the polymeric coupling region to the primer flash hole aperture and to the primer flash aperture groove to form a flash hole;
• inserting a diffuser into the primer recess;
• inserting a primer into the primer recess;
• forming a polymeric projectile end component from a second polymer composition, wherein the polymeric projectile end comprises a projectile end coupling region that extends to a shoulder region that reduces to a neck region having a projectile aperture;
• texturing the projectile end coupling region;
• texturing the projectile aperture about an inner surface of the neck to form a textured projectile aperture surface;
• coupling the projectile end coupling region to the projectile end coupling region to form a propellant chamber that extends from the primer flash hole aperture to the projectile aperture;
• filling at least partially the propellant chamber with a propellant;
• fitting a projectile in the projectile aperture;
• and
• applying an adhesive to the textured projectile aperture surface, wherein the textured projectile aperture surface provides wicking of the adhesive down the textured projectile aperture surface.

A method of making a polymeric ammunition having wicking texturing comprising the steps of:

• injection molding a primer insert by
• providing a primer insert mold comprising a top surface opposite a bottom surface and a coupling element that extends from the bottom surface, wherein the coupling element forms an outer surface opposite an inner circumferential surface, a primer recess in the top surface that extends toward the bottom surface, a primer flash aperture positioned in the primer recess to extend through the bottom surface, a primer flash aperture groove positioned in the primer recess around the primer flash aperture, and a locking groove that extends circumferentially about the top surface;
• and
• injecting a molding material into the primer insert mold to form a primer insert;
• molding from a first polymer composition a polymer ammunition cartridge by overmolding the primer insert to form a polymeric middle body having the primer insert at a first end and a polymeric coupling region at a second end, wherein the first polymer composition is overmolded and extends over an outer surface of the primer insert to the flange and extends over an interior surface of the coupling region to the primer flash hole aperture, wherein the first polymer composition extends from the polymeric coupling region to the primer flash hole aperture and to the primer flash aperture groove to form a flash hole;
• inserting a diffuser into the primer recess;
• inserting a primer into the primer recess;
• forming a polymeric projectile end component from a second polymer composition, wherein the polymeric projectile end comprises a projectile end coupling region that extends to a shoulder region that reduces to a neck region having a projectile aperture, wherein the projectile aperture is textured;
• coupling the projectile end coupling region to the projectile end coupling region to form a propellant chamber that extends from the primer flash hole aperture to the projectile aperture;
• filling at least partially the propellant chamber with a propellant;
• fitting a projectile in the projectile aperture;
• and
• applying an adhesive to the textured projectile aperture surface, wherein the textured projectile aperture surface provides wicking of the adhesive down the textured projectile aperture surface.