I'd like to make a light weight 1/3th scale 6 pounder for a small schooner. I need it light weight enough to pick it up and put it a way below decks when not in use. My thought is to make the cannon barrel from hardwood with a high strength steel tube liner epoxied in. If this is doable; what tube would work best? Would a threaded plug or welded plug work best? What bore diameter for a 1/3 6 pounder? Would a small steel tube threaded into the larger tube work as a vent? Could the tubing handle someone trying to shoot a projectile?