Really, I still have little clue as to what to do with this nice martini.

Slugging and casting will no doubt dispell much of the mystery. If all goes well, I'll be out at the ranch tomorrow and have the rifle home at the bench by nightfall. Chasing a slug through that bore will tell me about the twist rate, and I'll get a much closer look at what's up with the inner details.

I figure that all will leave me with more questions and comments.
I'll post back here when I know more.

--Tinker