No, what are you trying to do? For small game you should not really be aiming anyway. If you practice enough the gun should naturally point in the direction you look.

If you are talking about a turkey choke or slugs I would suggest getting some clamp on fiber optic sights, it will improve your groups quite a bit in most cases.

You can shoot slugs fairly well with a bead, but you have to know where your point of impact will be and adjust for it. Normally it will not be dead on, might be a little high or to the left or both ect. And you have to have very good form to do this. You will have to put your cheek on the stock the same way and in the same place every time since you don't have a rear sight as a reference.

Paul