Why are you getting pulled over? And if you do, how will LE know what is in your locked gun container which is not readily accessible back there in your locked trunk.
I would ask him to explain how you are violating federal law when you've secured your firearms in locked containers with ammunition stored away from the guns for starters.
Besides, what probable cause would you give him to even get started on a search of your vehicle? I don't think a routine stop or getting a speeding ticket will cause you any issues.
If you do get pulled over, stay calm, be polite (don't volunteer information that will cause further problems, innocent people tend to do that) and that will go a long ways.
Ya know if you moved to Pa our gun laws aren't very oppressive.
Allen