I agree with jOe. We spend a lot of time on this forum talking about chokes. I dont pay any attention to what my guns are choked, I just learn to shoot them, as individuals. I mentioned in a prior, that my favorite clays gun, a Lefever "H" had chokes which were unknown to me until Joe Wood measured them for me at Raton. My newest favorite, an "FE16" is choked amazingly tight. So I just wait longer to shoot. That probably wouldnt work for some folks. Someone used these wonderful old guns for a long time, happily and I am sure with success. Why change them....