I'm still quite new to reloading and was wondering at what point is case head expansion too much? So far most of most of my cases are around .424, after being fired through a KKM barrel (IMR 800X 10.1gr). At what point would yall trash the brass? Forgive me if some of these questions seem elementary, I'm trying to read and learn as much as possible. Wanna kill these ads? We can help!