Lloyd,
SxS's are all I shoot at sporting clays anymore. I've been using the Estate SS target loads and really like them. Loaded at 1 OZ. and 1180 FPS they shoot much softer and cleaner than the typical Federal, Winchester, and Fiocchi target loads in my 6 1/2 lb. 12 ga. guns.
The 12 ga. 2 1/2 chambered Churchill gets the RST 1 oz. loads however.
Karl