We like to play challengeing shooting games. Try cutting stem of a walnut,scyamore ball,hickory nut or other with a bullet,then busting the target before it hits the ground. another is sliding a empty 12 gauge hull over muzzle end of barrel,pull trigger to launch hull(it'll really go up!) and hit hull while still in air-NOTE-ONLY IF YOU HAVE PLENTY OF SAFE LAND(at least 1 mile in direction of shooting). Another is to line up empty .22 shells on a board at 50 yards and see who has longest run before missing. Another thing we do is put out the small clay piegons out about 150-200 yards. And of course running rabbits make challengeing targets in season. PLEASE DO NOT shoot glass bottles as they leave dangerous shards from now on.
I understood exactly what you were saying the first time. It may not be in the barrel but it is covering the muzzle, not a good idea even if it does fall off freely.What I'm talking about is 12 gauge empty hulls will fall freely on OUTSIDE of barrel and fall off easily-thus-NO barrel obstruction as there is no pressure built up. The .22 barrel is WAY smaller than the empty 12 gauge hull and will fall off of it's own weight easily when muzzle is pointed down.