Excuse me, but aren't there cnc (mechanical) systems that routinely machine to very close tolerances (.001" or better)? I think there are some machines (mechanical devices) that work to even MUCH smaller tolerances - I guess you know about that.
We put a man on the moon - I think we can do this too.
Another thought (while I'm at it) - ya know, paper targets are great for SCORE shooting, but are not really ideal for GROUP (especially
very small which we're talking about) shooting (and measurement).
But this doesn't seem to be the place to even SUGGEST a new idea and get any kind of interest - especially if you're not part of the benchrest "clique". Guess I should move to Europe.