I have been a bit out of the loop as far as acquiring ammo. What are the current rules for
1) buying from out of state vendors and shipped to CA?
2) self-importing from out of state?
3) selling in-state?
4) trading calibre X to calibre Y in person?
I am vaguely aware of the 11% tax and background check, but unclear on when they apply and when they don't.
Thanks!