Does it have the 28" vent rib barrel or is it the Protector model with the 18.5" bead sight barrel? Either way yes you can shoot rifled slugs through them, that is what rifled slugs are for. If you have the 28" barrel make sure you use the right choke, not one tighter than modified. If you have one with a rifled slug barrel then use sabot slugs. If you are just using a bead sight then try to keep your shots around 50 yards or so, no use wounding an animal.