Some quality brass cased pistol ammo like RWS,Geco,S&B,Fiochii,ect have a steel jacketed(bi-metal) bullet while oddly cheap steel cased stuff like wolf has a true copper/brass jacketed bullet.(their steel cased rifle ammo has a steel jacketed bullet) I'm not sure about the other russian stuff like Tula/Ulavansky.
I don't like wolf or tula but honestly by the time you spend $20,000 on 100,000 rounds your not gonna be worried about replacing a $400 pistol,$100 barrel,or $20 extractor.