I'm working on a Mosin-based scout rifle project. I've shortened and re-crowned the barrel to 20" and would like to install a muzzle brake. The places that do barrel threading seem to be all high-end shops that cater to the silencer crowd and other big shots. Mine is a low budget project, and the prices are so high I'm wondering if I ought to buy a lathe, do my own threading, and then start threading for others. Anybody know what such a lathe would cost, and how hard it would be to learn how to do such work? I don't need to retain to become a full blown machinist -- just specialize in barrel shortening, re-crowning, threading, etc. Also I don't "get" the costs for muzzle brakes, which seem like they ought to be very cheap to manufacture, but instead seem quite expensive, from $50 up to $200 . . .