Shotguns good in close quarters combat, more news at 11! On a serious note, yes they're good in Bio Labs, anywhere indoors with a small space in fact. Outside of that, not so much. All Maxes are very powerful in close combat, the ttk difference between them all is less than half a second I believe. The NC max is the most situational of the lot, don't face hug it and you'll be ok... shoot it from a distance and if that isn't possible, anti-vehicle grenade spam.