During the last few years as a machine designer before retirement last fall I had almost daily interaction with several machine shops including our own. Always their question concerned lthe accuracy of the drawing vs the actual model. Sometimes it was as simple as a hole call-out, sometimes not. A lot of the young designers in our group had no machine shop experience so there were struggles.
Your project seems like it would add a whole new chapter including the tooling, feed speeds for wood etc. When modeling the action/barrel do you have to shrink the model a tad to leave material for final inletting or can you adjust the CAM program? Or will it line to line the wood? Taking the extra material out early for bedding seems like a maybe too! The Forstner bit for the pillars seems like a thing of the past!
Like CBIshooter said; "Wow".
Randy