As stated, load with Fed data. I loaded some and they actually turned out quite good. I couldn't tell the difference between those reloads and any other Federals i had loaded. I doubt the nay sayers could either. I loaded them once and then tossed them. They looked like they would have taken another loading or two with no issues.
Sterlingworth, look under "Federal Hi-Power with rolled paper base-wad". They're identical with the exception of the Estate being approx. 1/16" deeper. I've loaded some ten times, don't anymore because I get all the once fired I want for free.
I load 18.4 grains Red Dot or Promo with the Federal 209 primer, 12S0 wad, and 1oz of shot. They run right around 1200 fps. Data from an old printed (1996) Alliant manual lists 21.0 grains of Red Dot with the 12S3 wad and 1oz of shot, Fed 209A primer at under 10,000 PSI at 1290 fps. The 12S3 takes up a little less room to allow for the larger volume of powder of the heavier load. 18.8 Grains of Red Dot or Promo works well for 1 1/8oz of shot, 12S3 Wad, Fed 209A primer. These run right around 1200 fps. This load is also under the maximum listed in the 1996 Alliant manual. Loading 18.4 grains with the 1 1/8 oz load will give you a nice 1150 fps load. These are for the Newer Estate, Top Gun, or Federal promotional shells as sold in WalMart. They have the fiber/paper base wads. Some of the older Estates were a Cheddite hull with a plastic base wad. They use different data. I don't load these more than one or two times. The primer pocket will usually start to leak around the second firing. They also have Green Dot and Unique loads listed and Hodgdon lists some for Universal Clays. The loads I listed have worked every autoloader I've tried them in and have done very well in cold weather. I've actually chronographed them, so those are the velocities you would expect to be close to. The exact clones of these wads will work fine as well. The Claybusters or Downrange clones are ok. I prefer the Downrange when I can get them.
Alliant and Hodgdon have apparently said you could use Gold Medal data as long as you stay away from the heavy (high pressure) loads.
My caps reload is in an Estate hull. 19.1 gr promo, cb2118 wad, rem primer and 1 1/8 of 7 1/2 . chrono 1230 fps. By the way this matches the Federals you can buy at Walmrt in the 100 pks. Give it a try. I would be curious to know if the speed is close to the same at sea level because most of my shooting is above 4000 ft.