This is my "first rodeo" at neck turning. I just got done turning some necks on my 280 AI Nosler brass over the weekend. The question I have is that most of the brass came out very uniform. The measurement middle-way up the neck is .0125, but when I take a measurement just below the neck, my measurement is .0130. 1. So my question for you guys, does this .0005 disparity really matter? Or is this close enough for govt work? 2. I do have some brass that are measuring .0120 on one side and .0125 on the other because I have my cutter set at .0125. Is that good enough? 3. Do any of you cull the brass if there is a certain disparity in the neck thickness or do you organize your brass according to overall weight? 4. What criteria should I use to cull brass? Thanks in advance!