That is a small barrel and because of the diminutive size I think the late Kentland lock would not give you the results you desire. I think a better choice would be a Manton type lock, as it is smaller in width. Because of the size of the barrel everything else is on the small side. When I use a barrel of this size I work from a blank, as it's much easier. It sounds like you are looking at using a pre-carve stock