I reload 3/4 oz exclusively for both 12 and 20.
I prefer Gun Club hulls as they are better in being uniform in length; however the recipe is basically the same.
Use the ClayBuster green 3/4oz wad, pick a primer, and for Unique, Alliant shows about 16.4 grains for 1250. Typically any good recipe for 7/8 oz in the powder dept. will work nicely for 3/4oz.
I use reclaimed shot to get costs down even further and these SMOKE targets on the skeet, 5-stand and sporting courses
(Getting 533 loads from 25# of shot isn't too bad either)