As far as reduced loads go, a close friend of mine used 1 1/2 ounce 7 1/2 loads in a 5 bore SXS H&H (6 boreball and shot fun, 36" bls. re-bored by H&H). He absolutely hammered clay birds with that gun, from the 16 yards pads. They put in about IMP cylinder bore chokes. It produced totally round patterns evenly spaced and deadly on flying critters, especially at turkey shoots. The trap boys with their modern guns really did not like shooting against that 12 1/2 pound shotgun. You could not stop the swing & shoot behind the bird - impossible. Slap the trigger on the way by and poof!