Thanks all for the kind words, greatly appreciated.
Satwel, the finish is very simple. The barrel and lock were cold blued, then rubbed back to the desired color with a scotch brite pad and Balistol. I've used motor oil in the past and that works well also.
Larry & Dennis, yes, that was the butt piece I had at the BBQ lunch.
It's a .20 ga, 46" Colerain barrel, and yes, Mike, I do have a copy of Schipper's book in the shop!, lol...