The left cartridge's headstamp states "FC 223 REM" which implies that it had been produced by Federal Cartridge Co. and it is while in the caliber .223 Remington. The cartridge on the ideal contains a Two digits are the last two digits on the 12 months of manufacture. It's essential https://louisprqol.shotblogs.com/the-best-side-of-cci-primers-for-sale-in-stock-33205819