Looks good Ron. Man, I never even thought about leaving a little bit of QLA. I would have been more comfortable with the thought of a countersink with that bit of QLA for a starter guide.

Hand held grinder? Not for me. No way could I control a grinder the way you did. My muzzle would look like the angle cut on the tip of a hypodermic needle if I attempted that. I would end up with a ten inch barrel trying to get it square.