My own opinion (right or wrong) has been that most cue makers have gotten into the craft from their love of the game of pool. I believe this because many cue makers are either wood workers or machinists by trade, and a pool cue is one of the least profitable products that a person with those...
I love a nice o/u. As a kid, I hunted with my Dad's Savage o/u, and have many fond memories. I've always wanted to get a fancy one, but haven't gotten around to it yet. That Baretta is a beauty for sure. Enjoy!
I believe the stuff you are thinking about used to encase coins and other items is lucite. It's also used for sales tombstones. No idea if it is appropriate for this application, but you can do some searches on lucite to learn more.
It's not a built in feature in BobCad, v23 anyway, and will not solve the problem that you posted about in this thread. You have to use a separate feature(profile/pocket) and a separate layer in your CAD with a different contour on each layer to pull it off. If you're not having a problem with...