Through my competition NSSA skeet shooting career I lived by the Winchester Western Ball Powder Loading Data --
Ball Powder Loading Data.jpg
Filling my compression formed AA hulls with the loads that had the * next to it indicating it duplicated the factory AA. Still using them for my old 20- & 28-gauge AAs and my supply of compression formed 16-gauge UPLAND and Dove & Quail hulls.
In recent years the powder companies have put out these combined manuals.
Combined Reloading Manuals January 2009.jpg
Often stacks of them at local gun clubs and reloading component stores.
My beloved 7/8 ounce 12-gauge load in the Remington STS hull and 3/4 ounce 20-gauge in the STS or Gun Club hulls from here.
Got my 7/8 ounce 16-gauge loads from the 16-gauge site --
http://www.16ga.com/forum/index.php