I bought a few blown barrels from shotguns,rifles,and pistols for use in the hunter safety program I taught for 15 years. I tried to find ones,where folks plugged the muzzle with snow or mud,and others that used the wrong caliber or gauge,squid loads in a pistol or auto.and destroyed the firearm. There is nothing like these examples to get the point across to the younger crowd. Had a Remington 870 12ga that someone slipped a live 20ga in the tube, loaded a 12ga right behind it and touched it off. Excellent display. But this barrel we are looking at here. I don't what it would be useful for.