Best weapon for close range?

I agree with Happy, shotguns are (and should be) close range weapons.  Any pistol in the face, shoot them in the face, will cause damage.  However, kill them? I don't think so.  I got some Hail Mary shots last week on people fleeing up the Bunny Slope on Storm Point with the Moz shotgun pistol.   I hit a lot of them at a great distance and I am a lousy shot in this game.  The shotguns not only spread out in a cone but the range is a lot more than it really should be.  Oh, I am not telling the devs to nerf it.  The guns are fine, just not realistic to this current time-scape.