lots of loads out there for 1oz shells...in 12ga....
1 oz is "one ounce"....regardless whether its full of 8's or 6's or 4's ....or
"OO" for that matter...
If I wanted a light load....I'd probably load them at 1150 fps using Hodgdon Clays .../ check the Hodgdon website...
all of my 1 oz loads ...for skeet, sporting clays, trap and bird hunting ...use Rem STS hulls, Green Duster wads, Hodgdon Clays and Win 209 primers...all I vary, is the size of shot....depending on what I want.