Not to be demeaning, but in the length of time it would take to make an accurate plywood pattern you can make temporary changes to your actual shotgun and shoot patterns to see what happens because of those changes. A plywood pattern cannot shoot a pattern, and where it looks like it is pointing is no indication of where the shot pattern will actually go. And, at 3/8" thick it would mislead you in indicating the thickness of comb needed to align your eye with the center of the rib. No shotgun stock is anywhere near that thin.
I've been down this road many times, and found that nothing replaces actually shooting your gun for POI.
I may be misunderstanding your point, Chuckster. If so, please fill in the blanks for me.
Thanks.
JMO, SRH
