Now that's my kind of guy!I hate saying no anymore, as I'm always wrong. I'll tell you what. As long as I don't forget, I'll test this, and video it next week. I've got a mossberg 500 barrel I would not care at all if I burst. I'll ramrod a slug half way down, stick a primed, empty, but charged with powder shotgun shell in the chamber, and pull the trigger with a string. If I can get even one shot to ignite, I'll admit that this is feasible. My current opinion is that there is no way.
If nothing happens (and chances are, nothing will) then try the same setup using a load of black powder. That should definitely prove if the "bicycle pump theory" is capable of bursting a barrel.