I'm about to embark on loading 9mm Luger. In looking at load data, AA#7 seems to produce some nice velocity at standard pressures. I'm curious if many folks use it or not? I don't hear a lot of talk about it. Any usage is dependent on working up accurate loads of course. I've heard good things about Power Pistol, which I have on hand, and AA#5 seems to produce good results also. I am planning on loading 124 gr RMR TC Match Winners. Is there a different powder to focus on?