[align=left]When did they first start using center fire primers?[/align][align=left]I'm trying to identify a cartridge I found yesterday. It is 1/2" in diameter(.50 cal?), 1 3/4" long, it is rimmed, there is a center fire primer,and there is NO stamped ID on the bottom.[/align][align=left]I'm trying to add some pictures.[/align]
