Only used Lapua 223 brass for my DD AR 15 to this point. Recently bought some new unprimed Lake City brass (not sure if classified as LC Match?) and ran thru my Forster FL sizer to get necks round. Then I checked on my Sinclair concentricity gage and Sinclair neck sorter. Am disappointed to see approx avg runout about .002 and many higher. And neck thickness on the sorter at .003-.004 avg. Was getting avg runout and neck thickness at .001 & .0015 respectively on Lapua. Is this typical and should it be a concern? My DD shoots right at 1 MOA. Thanks.