The only recent manufacture steel case ammo I have fired is Tularm 9mm Luger, perfect performance from four boxes. Also, no complaints about CCI Blazer in 9mm, Regarding .45 ACP, I have fired thousands of rounds of WWII Evansville ball which is steel cased. It always worked fine in a M1911, but fired cases tend to stick in revolver chambers, sometimes quite tightly. I don't know if that is a problem with recent steel case .45 ACP.