Buy out of state.. don’t spend nothing in California.
Buy a carbine rifle, the law covers handgun ammo... if you buy a rifle that uses the same ammo then buy it in bulk for your rifle.
Yes, cowboy action shooters are going to have a hard time competing with their .44 mag and .357 mag carbines. The only up side, so far, is that components aren’t banned so reloading is still an option. 50 rounds per month is BS. For a criminal, 50 rounds will last forever, however for a law abiding citizen who shoots in competition 50 rounds is a snap of the fingers.