Patterning different shells through each choke can be an eye opening experience. Sometimes you will find a combo that stands out among the others.I have a Browning Maxus 12ga that I plan on using for turkey this spring. I'm going to take it out this week to get an idea on pattern and range since I have no clue about that. It will chamber up to 3 1/2". I have various chokes....full and turkey. I don't really know if there is a lot of difference in these chokes.