Patent ID: 7458322

Claim:
A firearm cartridge, comprising a casing, the casing comprising: a generally cylindrical wall extending between a forward end and an opposite rearward end member about a central axis; an interior volume formed by said wall and said end member; said end member including a rearwardly facing outer end surface at a rearward end thereof and a receptacle formed in said end member, said receptacle opening at said outer end surface and extending forwardly into said end member to a forward end wall, said forward end wall of said receptacle being integral with said end member; an anvil projecting from said casing; a primer recess, defined at least in part by said anvil; a priming composition in said prime recess and adjacent said anvil; and a flange located completely rearward of said recess wherein said anvil and said end member are unitarily composed of a single piece.