Every county in CA has different rules (most of them is "Just say no!"). Some can carry anything, some have a certain number they must have. Our Sheriff recently stopped requiring that any ccw gun be on the CA approved list (which was a huge deal for us here in my county). So I'm not complaining about the 4 gun limit!
I know a bigger gun is always better, but here in CA, people freak out if they see a gun...even in the woods. So I'd rather keep concealed legally on my permit.