Was thinking about turning necks on my 223 so I can use by bushing dies without the internal sizing plug. The brass I have (LC) seams to vary 0.001" on the neck thickness. My Lapua seams to be good to go. AP really run smooth without the depriming stem and sizing ball. Was wondering what is the best options for this, powered vs manual. Also what are you using to measure run out? I see several measuring devices made by the big names.