The two stars with a line between indicates Starline brass. They are probably reloads or from a smaller maker. The bullet looks like a Speer Gold Dot.
I just got some 10mm, the headstamp reads "MCNETT" now.
I don't know of Atlanta arms has a commercial line and a remanufactured line, but all I've ever shot was reman, that was in whatever brass (mixed headstamps, mostly brass, some nickle, etc), and it was weak....Now if by chance it ain't georgia arms it might be atanta arms.