2033: Automatics (and maybe the svd-ish sniper rifle?) can shoot military grade ammunition and dirty rounds. If dirty automatic rounds don't work, I would suggest using your .44 magnum or shotgun. Last Light: Once again automatics are the way to go if you need the power of the old army to save you Though I think they made the rounds a little more efficient against the mutants of the metros this time around, though I would still say that an of your higher caliber weapons or a shotgun would still have the advantage.