In the use I have seen or heard from buyers. The rifled screw choke tubes are somewhat better than most smooth bores. I can say that any have said they shoot as good as a fully rifled barrel. However, the choke tubes are somewhat cheaper if someone is on a budget and wants to move toward some better accuracy and the use of a sabot slug. If interested I do have one I would make you a deal on? $16 shipped to your door? [email protected]