Many people whine about getting killed by shotguns. This is probably because they try to kill a corner camper with an auto rifle. This doesn't work. If you're trying to kill a corner camper with a shotgun and you still lose, you just suck, get over it. But if you want a solution, go stand in the back of the map with a scout rifle/SUROS and kill everybody that runs at you. If you're still getting killed by shotguns, you suck. To sum it up, if you suck with shotguns, don't use them. Change your play style and stop whining.