Where does one start?

[lilguy]

If one wants to move a gun collection out of their state of residences without the collector moving also, where would one go to research it. Are there restrictions in federal.law pertaining to securing a collection out of state. Could one store
a collection with a family member, locked in safes the relative could not access?

 

[JohnKSa]

Maybe, but it's very easy to screw this up which could get both the collector and the person caring for the firearms charged with felonies. The laws are not necessarily intuitive and there's a lot at stake.

The collector needs to get legal advice from a lawyer, one who knows the federal firearm laws as well as the firearm laws of the two states in question.

 

[CapnMac]

Now, I am not a lawyer. But, in my lay reading of 18 USC 922, I see no federal definition of a "collection."
As I read such things, moving one is the same as moving 100. The laws of the two States will matter.

And, of course we must needs be careful of not conflating "titular possession" with "keeping."
So, your point about using locked safes at the alternate location is likely mete, so as to not 'create' an interstate transfer.

There may be an interesting question about intending to store firearms in a State in which one does not intend to reside. But, that's very deep water to ponder.

 

[Frank Ettin]

If one wants to move a gun collection out of their state of residences without the collector moving also, where would one go to research it. Are there restrictions in federal.law pertaining to securing a collection out of state. Could one store
a collection with a family member, locked in safes the relative could not access?

See this thread.

 

[Spats McGee]

I'd suggest hiring a lawyer. They're paid for their expertise in such things. That said, if you want to do the research yourself, Cornell University runs a pretty good site that you can use for free: https://www.law.cornell.edu/