Why would there be a "shitstorm?" Your property was stolen, report it to the cops with descriptions and SNs so that if/when they bust some low life with one of your guns, you'll get it back.
I had a handgun and a bunch of holsters, etc, stolen out of my car in 1984. Of all the things I lost, the pistol was the only thing I got back.
Kind of a funny thing, I had written off the gun after it was stolen and replaced it with another one. Almost a year later I got a letter from the Boulder County Sheriff's office that read "we have made an arrest in a crime in which you were a victim." I thought it was odd and racked my brain trying to think of what crime I was a victim of in Boulder county. So I called the number and they looked up the case number and said "You had a handgun stolen last year right?" They said I could come up and pick it up after showing an ID.
So anyway, call the cops, give them the SN's and call your insurance company if you have one (homeowners or renters insurance usually covers a storage unit unless there is some specific exclusion in your policy. Of course, deductibles and policy limits apply too. Also, I'm not sure what happens if you file an insurance claim and collect on it and then the PD finds your gun. I don't know if you have to turn it over to the insurance company or pay them back or whatever. My loss wasn't covered (and it was way below the policy limit anyway) so I'm not sure.