As scary as it sounds, I had a thought this week. It's based on a posting made by Cpt. Curl. He talked about a poor boy DR using 7.65 Arg. barrels. That got me thinking about either barrels removed from old Lee enfields or even the VERY common and cheap Mosin nagant barrels. I own and shoot two M-39 mosins, and they share the same bore diameter as a .303 I believe. If you were to do this, what do you suppose the final weight would be too much? I'd love to hear thoughts on this. I would probably look into doing it on a 20 gauge frame.