I have Remington ventilators in three turkey guns. Two of them are 3 1/2 inch 870s one is a three inch 870s. They all shoot Winchester supreme 5 and 6 shot very well. Numbers are around 120s best I remember. The ventilator is the least expensive choke I have but I have had them for 5 or 6 years. Saw one on e-bay about a week ago but don't remember how much it cost. If you see a picture of a long, ported, Remington factory choke it is probably a ventilator. Great choke, especially for the money with lead. Long beards did not like it though.