http://www.alliantpowder.com/ has a link to data for STS, AAHS, and Federal hulls. Recipes for 1200, 1225, and 1250 fps. Pressures not listed there, although they may be shown in the main load data pages at Alliant. Alliant claims extremely clean burning, which would distinguish it from Unique - not that the residue from Unique ever caused me any problems. Charge weights or 20/28 in 28 gauge appear similar to Unique, at least for 1200 fps in AAHS.
I have not tried it, yet.