You can shoot a 3" Rifled slug from that gun. I myself would maybe go out and buy a separate (different) gun for deer hunting only. I've got two benelli shotguns (M1 Super 90 and a Super Nova). Both are smooth bore with a IC choke and Winchester Super X Rifled Slugs. Havent have a problem and they shoot accurate.

Try a buch of different ammo, chokes etc. and you'll find the sweet spot for that gun.

DC