Or you can do neck reaming on the fired brass with the Wilson inside neck reamers. Lots of controversy as to which works best...most say the outside neck turning is best. However, since you are using the Lake City instead of Lapua or other more precision brass, it seems to be a moot point. Try Winchester brass before you buy the equipment. The necks have been thinner in my limited (60 year) experience and may not need turning. By the way, if you have the Wilson neck reamers, if you get the dreaded Do-nuts, the reamer takes care of that problem with much less fuss. AND, by the way, measuring the fired Lake City brass to find the proper diameter may NOT work...if the brass is so tight that it cannot expand to fit the chamber with the bullet still inside, you will NOT get a consistant fired diameter reading. You need brass that has a fired diameter less than the chamber plus bullet to give you a correct measurement. Been there, made those mistakes.