50-80yds? if i were you and you are allowed, id put a 28" barrel on that gun with a full choke and shoot 00bk buckshot. my buddy has a 870 exp. and he shoots 3" winchester 00bk and i have seen him kill deer standing still at 80-100yds with 1 shot, and deer running he has killed many up to 70yds running. thats a good shooting gun, you just need to practice and pattern it.