Mine's a 1.065" dia. Douglass barrel from a PPC Open revolver loosely based on a S&W 586. Fired a squib in a match about 15 yrs ago in Katy, TX during Match 2, (somewhat fast-paced) and for some reason decided to proceed with firing the rest of the string (and match). Both bullets hit the target but were zeroes and the barrel now had a loose area just forward of the forcing cone. I was wanting to change twist rates anyway and the barrel makes an interesting paperweight.
There's a cylinder from the same gun but that wasn't a loading error. Makes a cool stand for my powder trickler.
Seems there's a Green Mountain barrel around here for a T/C Hawken percussion rifle but that doesn't count, right?