Re: 6.5CM Newbie questions Reply #15 – December 29, 2018, 03:42:28 PM Quote from: gman47564 on December 29, 2018, 03:18:59 PMJd I don't think using hornady brass that had different factory bullets has anything to do with your problem. Variances in neck wall thickness is the culprit. Using a bushing die to get consistent neck tension you about have to turn the necks down to where their all the same thickness. Far as bolt being hard to close sounds like your not bumping the shoulder back enough yet. Do you use a headspace comparator to measure how much your pushing the shoulder back?. If not you need to. Measure a fired round from base to shoulder datum line the as your sizing the case keep measuring it till you push the shoulder back .002 from what a fired case measures. Have never used a headspace comparator. Was trying to do that by ordering LE Wilson case gauge, but on it's own it really doesn't help measure. Am waiting for Larry Willis headspace measuring gauge to be back in stock and I will order one. You can get a rough measurement with case gauge and using the end of calipers, but measurement is sorta hit or miss that way.I'm definitely not real interested in neck turning if I can avoid it, wonder if I would be better off scrapping the neck bushing die in favor of a full length sizer w/o bushings ?