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Message: <blockquote data-quote="Jcann" data-source="post: 3600225" data-attributes="member: 33119">First off brass that is once shot is fired formed to the chamber. Naturally it springs back some but will chamber again and again to the same rifle. Resizing the neck only doesn’t work harden the brass near as much as full length resizing.The neck is the only part of the brass that comes in contact with the bullet and that’s the part I want to control. I have a die that only sets the headspace one to two thousandths back. It doesn’t touch the case body or the neck. I use this die always along with the neck resizing die. The neck resizing die is a bushing die whereby I control how much resizing to the neck is being done.I try to limit how much work hardening I expose my brass to and resetting headspace and neck resizing does that for me. Naturally, over time I do need to full length resize.I turn all my necks to 15 thousands neck thickness and knowing my neck chamber dimension I can properly set my bushing. I control bullet seating pressure, neck tension, and runout this way. If everything is done properly I get consistency shot to shot. And that’s what we are looking for in hand loading.</blockquote>