I doubt I'd be hitting much of anything past 70 yards. The old Winchester Super Pigeon loads, 3 1/4 DE, 1 1/4 oz 7 1/2's, would probably be my choice--assuming they don't limit you to 1 1/8 oz or something like that. I used to hunt pheasants with a guy who was very good at trap, and shot dozens of roosters every year with that Super Pigeon 7 1/2 load. He'd apparently never tried them in 6's until I gave him a box. He liked those even better. Unfortunately, hard to get that load in 6's in a quality factory load, although it's one you can easily duplicate
if you reload.