When coming back into California with legally owned Large Capacity Magazines, just do two important things:
1. Ensure the magazines are secure and out of sight.
2. If asked by LEOs if there are any weapons or anything illegal in your vehicle, Just Say
NO.
Because...
It is not illegal to lie to a cop (unless they are investigating you related to a Specific Crime). Cops often don't know the actual law (despite their job being to enforce these laws). So to avoid potential problems if you run into one of these idiots with a badge, Provide
only the information you are legally required to; which during a traffic stop usually involves your name, drivers license, vehicle registration, and proof of insurance.
When cops ask to search your vehicle,
always refuse! Cops aren't your friends at that time & they don't want to search your vehicle to
help you. They are looking for something to charge, cite, confiscate, and/or arrest you on!