Real life fight procs on every pellet from a shot, after your first shot on a weak point you will do 100% more damage every shot with guaranteed crits.
Feels good on close range characters with or playing as Enzo as you should not have ammo problems as often.
Only downside is it only feels good when you hit a weak point, or you lose major damage, and you burn through ammo really fast.
Plus, High-Power round weapons do not seem to compete against General weapons in this sandbox at the moment