Have owned a 50 for around a year. I believe it was the Speer Gold Dot mine didn't like. I handload for it, and have had zero problems since(except for the magazine springs are getting worn. On the 3 magazines they are all "now" causing a misfeed on the last round. None of them used to do that. Note they all didn't get bad at the same time. It was gradual). They are good guns if you know how to hold them properly, and not be intimadated by their size, and blast. I believe most inaccuracy, and malfunctions are caused by the shooter (Will note that some malfunctions are caused by the magazine. This can be a problem with any auto-loader). That's where it gets it's bad rap. Some think that if a gun (any) can't be concealable that it is of no use. Or just cause "THEY" can't handle them. It's worthless for everybody. All of this is pure B.S.! Buy one, take good care of it, and enjoy!
P.S. People that have shot mine (even one's that are strictly rifle shooters, and have no, or little handgun experience) had no problem's handling recoil, and no malfunctions occurred.