The left cartridge's headstamp suggests "FC 223 REM" meaning that it absolutely was made by Federal Cartridge Co. and it is actually during the caliber .223 Remington. The cartridge on the ideal contains a Two digits are the final two digits of the calendar year of manufacture. WARNING: Discharging firearms https://milohwjvf.activablog.com/21785258/new-step-by-step-map-for-cci-41-small-rifle-primers