Very interesting. Answers lots of the questions on this forum.
http://www.atf.gov/firearms/faq/unlicensed-persons.html#state-residency
http://www.atf.gov/firearms/faq/unlicensed-persons.html#state-residency
Thanks for posting this. It seems to provide a positive answer (at least on the fed level) about buying a firearm when staying at a 2nd home in another state. Now I just need to verify SC law.