Evil Dog,
Wow, you get tailgated when the cannon is in your truck?
A friend of mine owns a Verbruggen 3 pounder on a field carriage. Whenever he loads it in the back of his pickup to go to a reenactment, he says that he NEVER gets tailgated on the road.
Just in case though, we did work out a way to fire a blank shot electrically from the cab. :-D (Just wishful thinking. Wouldn't ever actually do it.)
Love the muzzle plug.