Patent ID: 9739580
Date: 2017-08-22
CPC Classifications: F42B

Claim:
1. An ammunition cartridge comprising: an annularly contoured rim section defining an axis line and having an outer diameter of 0.422 inches, said annularly contoured rim section having opposing first and second ends, said first end adapted to receive a primer; an extractor groove formed adjacent said rim section second end, said extractor groove having an outer diameter less than said outer diameter of said annularly contoured rim section; and, a hollow main body section adapted to receive a powder charge formed symmetrically about said axis line and extending in said axis line direction from said extractor groove and having a main body section first end adjacent said extractor groove and an opposing main body section second end adapted to receive a predetermined caliber bullet, said hollow main body section being contoured to taper inwardly from an external base diameter of 0.448 inches toward said axis line from said main body section first end throughout at least a portion of the length of said hollow main body at an angle of 0.36°.