What is your definition of “across the map” ? Actually, the shotgun’s effective range is very short, even compared to other shooter games. They are dreadfully unreliable past 10m. Maybe at the exception of the anhuld-12, but it is still way below machine pistols on those range.
I may be wrong in your case, but generally that’s a complain generally made by newcomers. Once you will face players aiming well with any automatic weapons, they really fall into small usefulness. Due to their rate of fire (roughly 1.3 shots per second), if you miss your first two shot or if you’re firing them from to far and do not make enough damage, you’re dead, literally. Shotguns, yes, are noob-friendly weapons and it may allow players using them stomping other players using automatics. But after a certain skill point, they have very limited roles and purposes, which both need strong aiming and movements skills.