Interesting video of hunter blowing up his barrel - warning, video is fine - but the ads on the page are probably NSFW
http://www.nothingtoxic.com/media/1244508800/Blocked_Rifle_Barrel_Blows_Up_in_Shooters_Face
http://www.nothingtoxic.com/media/1244508800/Blocked_Rifle_Barrel_Blows_Up_in_Shooters_Face