So I've got an interstate move coming up in the near future. The initial arrangement is going to involve me renting an apartment in the new state while Mrs. Write stays behind in the current state to prep our house for sale. At some point, we will locate an acceptable house in the new state, I'll take the opportunity to buy a larger safe, and all will be well.
Obviously, the best-case sequence for this is to have the new house available before we're out of the old house, so I can grab a binder of approved 5320.20s, pile everything into my truck, and drive it directly from House A to House B with minimal exposure.
However... there is a chance that we won't find a new place that meets our requirements before the current house sells. In that case, we'll be in the apartment for an indeterminate period of time. It is unlikely that any apartment manager will let me install and bolt down a gun safe. I also take it as a given that any apartment manager is going to display slack-jawed incompetence with regards to key control, so there's basically no assurance of security in that situation.
Having said all that... what's my best option for maintaining positive control over my NFA items while assuring legal compliance? Rental locker? Local NFA FFL? Find a friendly police chief and ask him to secure all my stuff in his armory?