I agree wit Quack Addict Get a pump or an auto, Even if you have to buy sepperate barrels, one fully rifled and one with a choke tube, you will have options as to hunt small game with fine shot , deer with buckshot or deer with slugs. Since you already go for deer with buckshot I assume you have a 12 ga. so I would opt for a 20 gauge semi-auto with a fully rifled barrel. If you just get one barrel with a rifled choke tube, Meltzers sells a front and rear sight that will mount onto the ventilated rib as required by law. Other wise use a scope . Hope I gave you some options.