You mean the glitch that makes them shoot too few pellet unless you have Extended Mags? They really need to fix that.
My suggestion on how to fix shotguns:
- Make the higher pellet count (that you currently have with Extended Mags) the default.
- Remove Damage profiency and add the "damage increase" it gives on shotguns by default.
The Damage profiency does not increase damage. It gives back the damage that has been taken out. Why don't they have this crap on sniper rifles, for example? So you'd have to level those to level 28 before you could even one-shot people?