Brazosland, get out the mill/bastard files and get to it! I had a total hip replacement (Fancy-schmancy titanium) and was trapped in the house for weeks, drivers' license pulled, stupid pain pills, etc. Had all the time in the world to draw-file a Keystone Profile William Leman .56 roundball barrel for my John Browning Mountain Rifle. I did the breech, under rib, and thimbles prior to surgery, and used the next month to file it out, 1/2 hour or so each day. The wife didn't even complain about the steel crumbs in the carpet...… Sweet girl, has no taste in men! And at Jed Smith Rondy in northern Cal, it hit 2 shots through the head of the squirrel hunt target, 1 hole group. You can make a nice job of it, and fit the under-rib real nice, too. A machine shop may not be able to do that, but you can! Great thing about profiling your own barrels- you can dream up whatever profile you need. My Keystone was sort of a copy of the Smith and Wesson Mod. 29 top rib/bottom rib idea. Wide on the top, narrow at the rib on the bottom. The balance is better than factory Browning, too TinHorn