In the format company name (headstamp [other headstamps]) _____________________________________________________________________________________________ Good to go brass: Starline (*--* Two Stars with line between them) Winchester (Winchester, WIN, WCC?) Norma (Norma) Magtech (CBC) Hornady (Hornady) Independance (*I*) Israeli Military Industries (TZZ) Federal (Federal, FC that is not 40S&W) Eldorado (ELD) Remington (R-P, UMC) Shootable, but not as good: Speer (Speer) Precision Made Cartridge (PMC) Company? (HY) Aguila (Aguila) Fiocchi (Fiocchi) Junk Brass: American Ammunition (AMERC) Armscorp (ACP) Company? (NNY) Federal (FC that is 40S&W) Sellier & Beloit (S&B) - Mixed reviews, some ok, some bad, usually the problem is related to primer pocket size. This information gleaned from the Glock Talk Forums. Anyone have other opinions on this list??