@RainPossibly honestly. This is what you mean, right?
I'm no expert, and this is actually my very first legit roleplay fight using a gun. I've done crossbows and shit like that, but never firearms.
Regardless, I'd be lying if I said that I thought the hot pressure blast could scorch through even a common bulletproof vest (Donny wears the serious stuff though, being the walking hidden armory that he is).
Buuuut...
If you are right and that blast can go through thin Kevlar...
You have my gratitude for inspiring me. The chamber blast seems like a cool way to disfigure someone's face, right down Donny's alley.