My imagination tells me that WW231, 700X, Bullseye will get a trial. If all else fails I have a supply of 3 fg and 4 fg.
Oddly enough I fiddled with some 3fg in the Sneezer awhile back. Numbers were quite good, particularly the ES. Full case of powder mildly compressed ran 950'ish fps. Cleaning the suppressor was a snap in the dishwasher.