Stick with published data. Hodgdon doesn't have any*. Alliant does. Red Dot with 12SO's is one example and its a peach.
Estates are manufactured by Federal. Per the folks at Alliant, Estates are ballistically equivalent to Federal's Top Gun hull and can be loading using any of Alliant's data for "Fed. Hi Power Plastic Shells with Rolled Paper Base Wad". Since its a straight walled hull, the 12SO is particularly good for a one ounce load.
*Hodgdon reloader's guide no longer lists data for that hull. Earlier Hodgdon manuals listed a few but they were limited to 3 dram and 1 1/8 oz.