I don't think you can ship a handgun to FFL without using an FFL. My LGS says they got a handgun in from someone without FFL, and they wont transfer it because it came from non FFL.
SHTF vs TEOTWAWKI you ask? SHTF, just some crap on the ceiling and walls, TEOTWAWKI end of the world as we know it. Orignally made by 9mm/®™©