The double is the real McCoy with better everything than the clickety-clacks. As for heavier loads, I haven't needed more than 1 1/16 or 1 1/8 on blacks and geese, early or late season. There's no accounting for gunners wielding heavy-load, high-velocity cannons. The oldtimers didn't need them shooting for their food. Market hunters I know used plain old 12s regular loads.