Subsonic polymeric ammunition cartridge
First Claim
Patent Images
1. A subsonic ammunition cartridge comprising:
- a primer insert comprisinga top surface opposite a bottom surface,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 aperture positioned in the primer recess to extend through the bottom surface, anda flash aperture groove positioned in the primer recess around the primer flash aperture;
a polymer mid-body that extends from a projectile end over the substantially cylindrical coupling element and into the primer flash aperture and into the flash aperture groove to form a flash hole;
a substantially cylindrical open-ended polymeric bullet-end connected to the projectile end and extending to a shoulder and terminating at a forward end opening; and
a propellant chamber formed between the forward end opening and the bottom surface.
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Abstract
The present invention provides a subsonic ammunition cartridge including a polymeric casing body comprising 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 at the body base and in communication with the propellant chamber.
325 Citations
19 Claims
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1. A subsonic ammunition cartridge comprising:
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a primer insert comprising a top surface opposite a bottom surface, 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 aperture positioned in the primer recess to extend through the bottom surface, and a flash aperture groove positioned in the primer recess around the primer flash aperture; a polymer mid-body that extends from a projectile end over the substantially cylindrical coupling element and into the primer flash aperture and into the flash aperture groove to form a flash hole; a substantially cylindrical open-ended polymeric bullet-end connected to the projectile end and extending to a shoulder and terminating at a forward end opening; and a propellant chamber formed between the forward end opening and the bottom surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An ammunition case subsonic propellant insert comprising:
- a polymeric propellant insert adapted to fit in a propellant chamber of an ammunition case to reduce an internal volume by at least 10% that of a standard casing of equivalent caliber.
- View Dependent Claims (19)
Specification