Alright what are you guy's using for Powder for 9mm. So far I have tried Bullseye, AA-5, Herco, 3N37, and N340. My subsonic load is 124 grn. plated bullet, whatever brass comes my way, Win primers,....and currently N340. My only issue with the 3N37 and N340 is cost and it can be hard to find. AA-5 is good but it leaves "little round balls" of residue...not a big deal but not as clean as the Vihtavuori. Bullseye seems a little fast....Uzi likes the slower burning Powders. Herco is really dirty. I am shooting suppressed part of the time so I am looking for a clean powder....something like N340 but cheaper. There are so many powders out there...any opinions?