LC brass consistency is excellent, year to year, even many, many years apart. As good as alot of other companies match brass. Just check OAL on the cases at first - if they're all pretty close, you're good to go. If you see a HUGE variation in cartridge OAL,.. it was fired from a machine gun... It's real easy to overcome that, after sizing, and just trim them all to the same length - and mark them, those long bastards that went through the MG. They'll lose primer pockets faster than "normal." Just something to watch.
There's about 1,200 of those shiny, primed little beauties loaded up now. That's the only brass that I'll use for the Mk11 load, with the 178 ELD-X projos. That load is amazing.