I shoot a lot of trap and have never noticed that much smoke from my gun or anybody elses.
I think Seven plus One has the best explaination on blanks using black powder.
On another thread another poster said the piece on the top barrel looked like a “blank adapter”.
We all know that either this was a pure photoshop fab or they posed him with a blank firing shotgun and set the camera to capture the smoke “evidence”. This asshole still has no clothes!!!!