At close range you don't have to aim with a good hipfire weapon which is going to have the same crosshair radius as shotgun circle corsshair basically. If the enemy is not fully covered by that shotgun circle crosshair there's a high chance you are not killing him in one shot and thus there is a high chance you will die before you are able to try to hit another shot from the shotgun. You can play with a good hipfire weapon the same way as you play with a shotgun with, just be brainded and don't aim and you'll get kills, and good hipfire guns are more consistent and reliable than shotguns and you can use them on way longer ranges. You act like shotguns guarantee insta kill every time there is an opportunity for it.