Patent ID: 11953303
Assignee: TRUE VELOCITY IP HOLDINGS, INC.
Field: Other special machines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. 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.