I think AA7 is the best thing since sliced bread for 9 major, and I also think WAC is stupid. You and I have discussed it before, lol.
SW Major Pistol was a slightly different version of AA7, but loaded and shot essentially the same. I use AA7 exclusively for 9 major these days, since you can't get SW MP. usually around 9.6-9.8 grains for me in my KKM 5.0" OAL barrels with 2 medium holes.