some are rifled slugs which could be used in smooth bore barrels- bird shot barrels ,
and in rifled barrels use sabot slugs ,so ye most shotgun will shoot slugs .
but if you just want a specific gun just for slugs and not bird shot combo ,i would consider a rifled barrel shotgun
and if you consider shooting bird and slugs then look for a smooth bore barrel gun and a choke for the rifled slugs
hope that helps

and i also agree with what Almaink said
good luck this season
sometimes i think deer just parachute out of sky.
hunting is not a competition of man vs man but rather a accomplishment of man vs nature
WWF (Wonderland Wildlife Federation) member for life.
If Geronimo was shooting a crossbow we all be speaking Apache