Gizmo - I'll start by saying, if I missed something, I apologize.
I just read this thread from the beginning and I could not find anything about re-headspacing the chamber with the installation of the new barrel. If you did mention it, I missed it. If you just assumed we'd know you did the headspacing, that's great. If you didn't check the headspace, that can be dangerous.
Since you were doing an accuracy upgrade, I'm assuming that you would blue print and headspace, but wanted to ask to be on the safe side.