If you can find one, the old Lohman Long Shot tube in .680 is about as good a lead choke you will EVER find. I have used mine to take probably 30 gobblers and fall birds and have won a BUNCH of card shoots with it. I actually won so many times at one of the local turkey shoots one fall that they banned me...or rather my gun from their shoots. The big thing after your pattern and either regulating poi/poa issues or mounting some form of sights or optics is the TRIGGER. It is very easy to pull a shot at 60 feet if your trigger is rough or heavy.
