Still needs to go to the USSC, but it’s another step in the right direction:

US judge strikes down California ban on high-capacity gun magazines

California’s ban on standard capacity magazines was struck down not on some technicality, but because it’s blazingly unconstitutional.

Ruling here:

https://www.courtlistener.com/docket/6082773/149/duncan-v-becerra/

Woe to the victim who runs out of ammunition before armed attackers do. The police will mark the ground with chalk, count the number of shell casings, and file the report.