The shotgun of course.
I gotta get me some Dragon's Breath......... About $5 a round.............
Pretty sure you don't want to use that in a home defense situation, unless one wants to burn their house down. Probably best to use outside in the middle of a downpour............I looked online but couldn't find anyone brave enough to make their own rounds.
"Dragon’s Breath shotgun shells are filled with Zirconium alloy powder pressed into pellets or flakes. When the primer is struck, the Zirconium ignites and is propelled from of the barrel, turning your shotgun into a short range flamethrower."
5 worst home defense shotshells :: Guns.com