I was talking the other day with a builder friend , we were discussing early fowlers, when this came up. In Tom Grinslade`s fowler book , there are some fowlers , that the Butt piece overhangs the wood by a tiny amount maybe 1\ 16 or slightly more. Most of these appear to have uniform overhang around the BP. I have seen the same on a few old rifles , but not to the extent , it is seen on fowlers. We both felt like it was done to afford some protection to the wood. Not saying that it couldn't be shrinkage , but it would have to be pretty consistent shrinkage , for so many to look this way, I would expect to see other "signs" elsewhere on the piece. I realize there may not be an answer , but I wanted to get others input and ideas on this , as I haven't heard a discussion of this before? Ideas?