I've got a Uberti regulator, 45 colt, with a 7 1/2" barrel. I also have a 4 3/4", 45 colt barrel, off of a Uberti cattleman. The Cattleman has 20 TPI, but I don't know about the regulator. Since they are from the same company, both SAA clones, same caliber, doesn't it make sense that the company would probably not change the thread pattern in similar products? Has anyone swapped out barrels on these two revolvers? :?