I use two Clays loads in 12-gauge Remington STS hulls. I load the green hulls with a Remington 209P primer, 16.4 grains of Clays, a TGT-12S wad and 7/8 ounce of shot -- 1200 fps at 6300 psi. When I feel the need for 1 ounce, I use the gold hulls and I up the powder charge to 18.4 grains of Clays. The "book" gives 17.9 grains for 1180 fps at 7400 LUP, and 18.9 grains for 1235 fps at 8100 LUP.