FIREARM HUNTING FOR DEER IN YOUR STATE IS WITH SHOTGUN, MUZZLELOADER, AND HANDGUN IS THIS CORRECT?

REASON I' M ASKING IS THAT I JUST GOT DONE WATCHING THE TV SHOW " HUNTERS JOURNAL" ON THE OUTDOOR CHANNEL THEY WERE HUNTING IN SOUTHERN ILLINOIS AT " SAMSON RIDGE" ALL THE HUNTERS WERE SHOOTING CENTERFIRE RIFLES. ANY IDEAS ABOUT WHY THEY COULD USE CENTERFIRE FIREARMS?