Patent ID: 9003973
Filing Date: 2015-04-14
Classification: F42B

Abstract:
1. A high strength polymer-based cartridge for subsonic ammunition comprising: an upper component, molded from a polymer; a bullet, having a conventional weight for a caliber of the bullet, removably engaged with the upper component; a lower component, molded from a polymer, and engaged the upper component; an insert engaged to the lower component; a shoulder portion of the upper component; an upper component inner wall extending from the shoulder to the lower component and having a first diameter; a lower component inner wall extending from the upper component to the insert having a second diameter; and a linear slope disposed between the first diameter and the second diameter; wherein the upper and lower component inner walls form a propellant chamber; wherein the first diameter does not equal the second diameter; wherein the first diameter is less than the second diameter; and wherein the slope between the first and second diameters reduces a volume of the propellant chamber.