I personally would adjust the hooked breech on the barrel. If you were to off set that tang it could lead to a lot of accuracy problems. None of my barrels needed that kind of adjustment. I did have to knock some of the thimble rib off a couple of the barrels, but not all the barrels...

Do a little at a time and take off as little as possible trying to be even to both sides. But of course you knew that... Good luck and be sure and let us know how it turned out.

When your done, try 100 grains of powder and a 250 grain shockwave. It really does shoot them nice. I also shoot the 200 grain out of it, both the Shockwaves and XTP's.