I can not speak for the Winchester, But I have a Truelock choke for every turkey gun I have. The Federal Heviweight #7's pattern very well with them. My 3" guns would put 180 in the 10@40, and my 3.5" guns would do 210 in the 10. Truelock builds a choke for the Federal Heviweight shot, and if you are not happy with the choke you can return it.