I have been using a Hastings choke .655" with Win Supremes # 6's in 3".
Just today, the gun shop owner that I do business with let me bring
home 3 Kick's chokes in .655", .660", and .665". I am going to try
them with the Win Extended 3" # 6's to see which patterns best this
weekend. I will postthe results as soon as I get done.