Nice work. I've used the brass screw method to touch up crowns many times before, always with excellent results, but this is the first I've heard of a Q-tip test. Care to explain? I'm envisioning spinning it in the crown and if there's no fuzz left behind, you're GTG?
Yup. I have used this for years with zero issues.
http://www.brownells.com/gunsmith-t...m-brass-muzzle-crowning-lap-prod855.aspx
