I just got a call from Federal about the cartridge separation. Evidently, this is not a rare ocurrance. Supposedly Ruger in its manuals has a warning about semiauto cartridges in revolvers and bullets that creep out. Federal advises to shoot a couple of cylinders of the bullets you want to use with the exception of one bullet in each cylinderful to verify the last bullet is not loose due to recoil. As I only shot six of the eight with the one the separated, I checked the last bullet and it was still tight. I can understand this in a small revolver like a Ruger pocket type pistol, but the 929 is 44 ounces with a 6.5 inch barrel and compensator so I can't believe this is the issue here. A bullet being shot in a 938 or even a 43 and then stripped from a mag and slammed into a chamber would experience far worse forces than in my 929. I personally feel that the aluminum does have the strength to retain the bullet like brass or even steel does. That being the case, I guess I have to go to brass cases when shooting my 9mm revolver.