I just got a winchester 23 Heavy Duck. The chokes have been opened to .720 and .725. I would think that since it was made in japan and 1984 when steel was fairly common to shoot in certain areas it will work fine. Especially since it has such open chokes. I dont intend to shoot only numbered size steel not big stuff like BB or bigger(mainly #4). What are your opinions and experiences?

thanks
duckaholic