I picked up two 8 LB kegs AA2200 that has been discontinued, i think they replaced it with 2230 can't recall the no# for sure anyway i have shot about 350 to 400 rds with it, i could not find any load data in any of my reloading manuals and i have a AA manual so i called them and told them what i had the guy was real helpful
and sent me the data for aa2200. so long story short worked up to 23.5grs with 55gr sp and fmj, the best group was with V-MAX bullets in my varminter which were 1/2 to 3/4 at 100yds.
my M4's shot around 2 1/2 to 3in. i still like H335 the best in all of the rifles i have. hope this helps