Hi Stuart,
Looking good. You still can take quite a bit of wood off the forestock. On my rifles, if you look down on the barrel, you will usually see no more than 1/16"-3/32" of maximum wood thickness on either side of the barrel. That is the maximum thickness at the apex of the radius of the stock, not the edge along the barrel. I have an original 18th century English fowler on which, if you look down on the barrel, you can barely see any wood at all, but that is facilitated by the round barrel (essentially no vertical sidewalls).
dave