Be prepared to pound the phones and rip open that wallet!
I was having a friend help by calling a couple place once or twice a week. Managed to pick up 1500 9mm and 400 22lr recently. Not cheap BTW. That should do me for awhile. I'm just cutting back on range time until about late 2021 when, hopefully, the supply catches up.
Online purchases have to be shipped to a FFL dealer. Though about that, but locals were quoting $40 or 10% of invoice to receive and do the paperwork. Contact the state attorney general Xavier Becerra and let them know how you feel about it! He's all over supporting the dubious background check for ammo (inherently flawed!!!) and the manufacturers standard clips coming to CA. Let your voice be heard.