Two questions, 1 it looks like the chamfer at the bore is little more than smoothing out the burrs. I had a buddy that is good with his tools recrown a bore for me, he did it that same way. I expected a "deeper" chamfer, but he said that is the best way to do it.
2, is the little chunk of barrel a copy of the throat geometry of the barrel? makes it easy to find oal...
