Been my experience that the Greek ammo is really only good for a couple of reloads,they split at the neck a lot. Cheers Ross
I have some that are up to load No9 at MkVII specs. (takes a while to get there, I have a thousand cases in use) Have not had a case failure yet. Are you overworking the brass? How often do you trim case length? Might be something real simple/ easy to fix.