Fiocchi is supposed to make a 1-ounce 1150fps load that is very manageable recoil wise. If it were me and I had a loader I would......7/8 oz (24gram) shot at about 1,200 fps driven by Clays powder. They publish data for these loads. I've found both the pink Winchester wad and the Federal 12SO wad to work well with either AA or Remington STS hulls. 7 1/2 or 8 shot should work well and if the recoil @ 1,200 is too much drop the powder charge by 1/2 grain or so.
Good Luck,
Rick