Mossback, if you have a "real" gunsmith (vice a typical firearms retailer) in your area they may have an assortment of takeoff or used barrels at reasonable prices. I've seen tables full from time to time at various shops. You might be able to pickup a barrel and practice your new found skills while waiting for a weapon. Plus doesn't hurt to have a spare barrel laying around.
These guys will also look out for something you need if you get to know them.
Regards
These guys will also look out for something you need if you get to know them.
Regards