Method of making polymeric subsonic ammunition
First Claim
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1. A method of making polymeric subsonic ammunition having a primer insert comprising the steps of:
- providing a primer insert comprising a top surface opposite a bottom surface and a substantially cylindrical coupling element that extends from the bottom surface, a primer recess in the top surface that extends toward the bottom surface, a primer flash hole aperture positioned in the primer recess that extends through the bottom surface, and a flange that extends circumferentially about an outer edge of the top surface;
forming a substantially cylindrical polymeric middle body by overmolding a polymer composition over the substantially cylindrical coupling element and into the primer flash hole aperture to form a flash hole and extending from the primer insert to form a polymeric coupling end, thereby forming a propellant chamber;
forming a propellant insert adapted to fit in the propellant chamber;
positioning the propellant insert in the propellant chamber to reduce the propellant chamber by at least 10 percent;
forming a polymeric nose component comprising the steps of forming a polymeric nose coupling end opposite a bullet aperture, wherein the polymeric nose component is formed from a second polymer composition;
adhering the polymeric nose coupling end to the polymeric coupling end;
inserting a primer into the primer recess;
at least partially filling the propellant chamber with a propellant; and
frictionally fitting a projectile in the bullet aperture.
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Abstract
The present invention provides a method of making a subsonic ammunition having a polymeric casing body having a generally cylindrical hollow polymer body having a body base at a first end thereof and a mouth at a second end to define a propellant chamber; a propellant insert positioned in the propellant chamber to reduce the internal volume of the propellant chamber, wherein the propellant chamber has an internal volume that is at least 10% less than the open internal volume of a standard casing of equivalent caliber; and a primer insert positioned in the body base and in communication with the propellant chamber.
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Citations
17 Claims
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1. A method of making polymeric subsonic ammunition having a primer insert comprising the steps of:
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providing a primer insert comprising a top surface opposite a bottom surface and a substantially cylindrical coupling element that extends from the bottom surface, a primer recess in the top surface that extends toward the bottom surface, a primer flash hole aperture positioned in the primer recess that extends through the bottom surface, and a flange that extends circumferentially about an outer edge of the top surface; forming a substantially cylindrical polymeric middle body by overmolding a polymer composition over the substantially cylindrical coupling element and into the primer flash hole aperture to form a flash hole and extending from the primer insert to form a polymeric coupling end, thereby forming a propellant chamber; forming a propellant insert adapted to fit in the propellant chamber; positioning the propellant insert in the propellant chamber to reduce the propellant chamber by at least 10 percent; forming a polymeric nose component comprising the steps of forming a polymeric nose coupling end opposite a bullet aperture, wherein the polymeric nose component is formed from a second polymer composition; adhering the polymeric nose coupling end to the polymeric coupling end; inserting a primer into the primer recess; at least partially filling the propellant chamber with a propellant; and frictionally fitting a projectile in the bullet aperture. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification