I have seen "blueprinting" mentioned a couple times? What is done to an action to blueprint it? Thanks guys its great to be able to find out the answers here!!!
Hopefully this will explain a lot of what you're looking to understand.
Both guys are very approachable and great to deal with.
Another method is employed by C. Dixon and he's using a vertical milling machine to true the receivers. Operations are quite similar, just performed on a milling machine. The effect is the same.
blue printing is where they true the action of your gun to the center line of you barrel and make sure your bolt setting properly here check out youtube theirs a good expiation on their from Brownell's I believe PM me if you cant find