Federal American Eagle ammunition - what powder is it ?

[Plasmaboy_AU]

Hi , I know the chances are slim in finding this out but - What powder does federal use in their American Eagle ammo for 9mm ( 124 Gr FMJ) . I fired 50 rounds of this stuff theough a new pistol to run the barrel in before switching to coated lead projectiles. holy crap Batman !! the fired brass ( internally) looks like it just came our of a brass polisher. Im use to ADI powders leaving a grey / black residue , these Federal cases looked like they were new / unfired brass . If I could figure out what they use, Id love to reload with it !