Try these two.
STS or Gun Club hull, STS209 primer, 15 grains Alliant ExtraLite, CB0178-12 wad and 7/8oz #8 1/2 shot. Alliant says 1150fps @ 6580fps.
STS or Gun Club hull, STS209 primer, 15.8 grains Alliant ExtraLite, CB0178-12 wad and 7/8oz #8 1/2 shot. Alliant says 1200fps @ 7450fps.
It is super clean, fits well, is cheap to reload and works with your standard press settings.
Here are two more loads that work well, but require crimp adjustments to prevent dished crimps.
STS or Gun Club hull, STS209 primer, 14.5 grains Alliant ExtraLite, TGT-12 wad and 7/8oz #8 1/2 shot. Alliant says 1150fps @ 7210fps.
STS or Gun Club hull, W209 primer, 14.5 grains Alliant ExtraLite, TGT-12 wad and 7/8oz #8 1/2 shot. Alliant says 1150fps @ 7460fps.
Bumping the last two loads to 15.5 grains gives 1200pfs @ 8015 for the STS primer and 1200pfs @ 8700 for the Winchester primer.