The Lyman shotshell reloading manuals have some excellent 7/8 ounce low pressure 2-3/4 inch folded crimp 12 gauge loads using Clays powder, Winchester AA hulls, the Claybuster 7/8 ounce wad (the one ounce wad works about as well for me with 7/8 ounce loads, with only the slightest dishing of the crimp) and Winchester primers. Several of my lightweight sxs are older and I use these loads exclusively in them for skeet. A somewhat heavier Clays powder charge in Remington Premier hulls with Federal primers produces an excellent high velocity international trap load which we use locally for a wobble trap setup with the machine cranked up to throw the bird at international speeds. By varying the hull type, I always know for which guns the load is acceptable. Hulls seem to last a very long time with either load.