Because a fast-firing automatic shotgun does the same thing without eating your exotic slot and special ammo is already easy to find.
Plus it often loses to Rangefinder Conspiracy Theory unless your enemy somehow misses the first shot.
That's why.
English
-
Nah fire 3 shots before they get close
-
Yeah this works except when you're caught in extremely close quarters in which case the high impact shotguns always win. I love Invective but it's not ideal when countering other shotgun users.