From this thread:
11 days later
USCCAOfficial USCCA Moderator
I double-checked with our Reciprocity Map / concealed carry law expert and we found this additional reference for y’all:
ATF has previously addressed the eligibility of individuals to acquire firearms who maintain residences in more than one State. Federal regulations at 27 CFR 478.11 (definition of State of Residence), Example 2, clarify that a U.S. citizen with homes in two States may, during the period of time the person actually resides in a particular State, purchase a firearm in that State. See also ATF Publication 5300.4 (2005), Question and Answer B12, page 179. Similarly, in ATF Ruling 80-21 (ATFB 1980-4, 25), ATF held that, during the time college students actually reside in a college dormitory or at an offcampus location, they are considered residents of the State where the on-campus or offcampus housing is located.