That sucks and is unfortunate. Could be my future here also in the upper left corner of the country.
If it's a permanent thing it might be worth transitioning to guns that have reliable 10 round magazines. Or guns designed to only carry 10 rounds.
At one point California was allowing regular capacity Glock magazines that were riveted to only accept 10 rounds. Don't know if that's a thing there anymore or if that would work for you.
Standard capacity magazines are likely not a great solution if you only have access to a few as they are a wear item and if you can't practice with them and test them with your ammo it's no bueno. Me personally I would rather have 10 confident rounds than 15 maybe rounds in magazines I was not able to vet properly. YMMV. Good luck.