Plinker, the Winchester you you described is a stanard load ie 1 1/8 oz at 1200fps. There are alot of different combinations you can use. IMHO the Federal Gold Medal and Remington STS are better hulls than today' s Winchester AA' s. It is worth getting the better hulls to reload with, I too would' nt bother with the Universal' s.
There are to many wad/powder/hull combinations to mention here, like Bobby said, get the Lyman Shotshell book, it has tons of info in it.
As far as shotshell data goes you need to adhere to the specific recipes. Dont go changing things on a load if it' s not listed. I wouldnt go with a load that is posted on here or any other forum without checking a loading manual first.
If you are plan doing to to alot of shooting, which I as a trap shooter too load 10' s of thousands of rounds a year buy the componets in bulk, it' s cheaper in the long run.
Alliant Red Dot, Hodgdon Clays and Accurate Solo 1000 powders are good in the load you want. Clay Buster wads and Cheddite powders are good values also. Sometimes where you live and shop dictate what reloading componets you use.

my $.02 AA