Subsonic polymeric ammunition cartridge
AssigneeTrue Velocity IP Holdings, LLC
InventorLonnie Burrow
Life of this patent
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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 between 25 and 80% 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.
Claims20
A subsonic ammunition cartridge comprising:
- a polymeric casing body comprising a generally cylindrical hollow polymer body having a first end connected to a primer insert and a mouth defined at a second end and a propellant chamber formed between the first end and the second end;
- a primer recess defined through a top surface of the primer insert and a primer flash hole defined through the bottom surface of the primer insert, wherein the primer recess is in fluid communication with the propellant chamber via the primer flash hole;
- and
- a two-piece propellant insert positioned in the propellant chamber to reduce the internal volume of the propellant chamber by at least 25% in comparison to a propellant chamber of a standard cartridge of equivalent caliber, the two-piece propellant insert comprising a lower insert and an upper insert, the lower insert defining a first inner diameter and extending from the first end of the hollow polymer body toward the upper insert, the upper insert defining a second inner diameter different than the first inner diameter and extending from a top surface of the lower insert toward the mouth.
Dependencies are inferred from the claim text.