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If the headstamp was LC, it wasn't Federal. They were simply disposing of it for Lake City.A 420 round can of Federal XM855 I bought a long time ago was pretty horrid. Ten inch groups from a 16" 1:8 twist barrel- at 60 yards. I thought there was something wrong with the rifle until I tried some Hornady ballistic-tipped rounds and it shot near MOA. First Federal ammunition I've ever had an issue with.