Come on, guys, I've got guns! I've got powder and can do metalwork! I wanna help blow things up!
But we'll use your gun for the stuff like I just watched. They decided to see if you could get a shotgun barrel to blow by sticking your finger in the barrel. So they took a 12 guage, made a synthetic bone/ballistic gel tissue hand, stuck the finger in the barrel, and pulled the trigger. Remotely, of course.
Result? One hand blown off of Buster, no damage to the gun. Twice. So then they used a ballistic wax hand(more rigid material) and managed to ring the barrel just back from the muzzle, but no 'banana peel' fracture. What next? They rammed the muzzle into a flowerbed and got a 8" dirt plug in the barrel, and fired with that. That split the barrel for about an inch or so and caused the vented rib to break loose and roll back, but no big split and no sign of damage to the ballistic gel head and shoulders in the shooters position.
So as a last resort, they cut the barrel back to get a square muzzle, ground a steel plug and welded it into the muzzle and fired it. And it blew the end off the barrel just behind the weld, and caused a small split. With still no damage to the 'shooter'.
So as a final test they took a Carcano rifle, pulled a bullet, hammered it into the barrel at the muzzle to simulate a squib and a stuck bullet, and fired it. It blew off about an inch or so at the muzzle(neatly amputating the bayonet mount), but not banana peel split.
Back when barrels were made of wrought iron I could see the type of split they were looking for happening; wrought iron is a lot softer than steel. But with steel barrels, especially modern ones, I much doubt it.
Damn, I want to work on that show.