Most bagged #8 measures between US #8 and #8.5 anyway. For 16 yd trap and average NSCA stuff (not talking FITASC or PSCA) it works on most presentations under 40 yds. Keep a few #7.5s for rabbits beyond 25 yds, or if quartering.
And 7/8 oz will handle the above, and with less recoil. Far as I can tell ATA is a game of recoil-attrition.
