I know this is a bit older, but I have been not shot for a year since i have been building my house. I was running e3 in my accurail sti with the infinity sight tracker barrel. I believe i was 3.9gr at 1.2 with acme bullets... e3 powder was clean in chamber, but the end of my gun was filthy. After a stage I could not see my fiber front sight. When the gun is holstered, my pants were all carboned up. Has any one else had this result. I think I want to try red dot, n320, and maybe ramshot competition.