A few months ago, I had many questions about neck wall thicknesses and concentricity gauges. Mathman, as well as others, took time to answer my questions and steer me in the right direction. I bought a gauge and started paying closer attention to my reloads. I culled out brass that had neck wall thicknesses difference greater than 4 thous. and cartridge run out.
I even went so far as to buy a new Forster bench rest seating die. Imagine my surprise when my bullet run out was 9 thousandth. Any ideas as to what is causing that.
Thanks
