Jeff,
Often wondered about shooting a smoothy with shot loads and "rear sights". Do you hold the sight center mass or do you adjust your sight picture to a rising, or dropping, pattern? I have a 12 ga that shoots fabulous 50-55% patterns but the patterns are rising out to 30 yards, no rear sight so I cover my target, or clays, with the muzzle of the barrel and let them fly into the pattern.
Mark