Sportsman's Guide has the best ammo prices on 12 Gauge Shotgun Shells. Browse our selection of Shotgun Shells for every caliber and top shotgun brands. Check out 12 Gauge Steel Shotshells Ballistics Chart and 12 Gauge Slugs Ballistics Chart for ammo specifics. You'll find that Sportsman's Guide is your one-stop shop for all your ammunition needs, with a wide variety of different 12 gauge shells, from slugs to buckshot, available in a variety of 12 gauge types. Whatever you're looking for, we've got what you need.