Rich, since you also inquired of greenhorns,....... I inlet my own barrels with a pantograph type machine. I do not do a blueprint but I make a profile pattern from a piece of lauan that has the barrel, lock, etc. and stock dimensions. This allows me to use it again if I use the same type lock and barrel. Wrist cross section shapes, etc, are just rough sketched or depending on the case, if an original is on hand for those measurements I go to it as the shaping continues.