Clarification, a hunting shotgun for dangerous game. A wild boar might kill you, but only zombies can turn you undead with one bite.
As an additional plus, the gun can be carried easily with one hand. The other arm would come in handy for putting around the romantic interest as you ride off into the sunrise after making your neighborhood safe from the zombies. Being a pump, KSG can also handle less lethal riot control munitions…just in case you’d rather steer the zombie hordes towards the government offices than kill them.