I have a 300 BO that I have been casting the 230 lee and powder coating it to bring it up to proper size. Still not real happy with it but its the only boolit I can powder coat and get a good OAL that will function in the ar platform. THe problem is with the suppressor I am getting lead in the suppressor, none at all in the bore. I can take my can apart, (form 1 titanium can) and clean it but lead is stubborn. Has anyone fired cast using a can, subsonics, and not having any leading issues? What mold are you using, powder coating, lube, hitek, or not, etc etc.