Thanks for the update.

Any effort on your part is deeply appreciated.

Wouldn't you think it would have more than one entry in the books to account for the barrel work that was obviously performed sometime after it was originally shipped? Winchester and Colt both made entries to indicate when a gun was returned for factory repair or improvements.

I just got in my supply of .505" diameter bullets (440gr) and will do some chronograph work nest week, followed by seeing how well it is regulated.
KM