I guess you would case them all up and rent a truck big enough to haul all the guns and ammo. You would plan to spend about three days on the road. You would get motels where you could back the truck in right next to your door.This is hypothetical, but how does one move 100k rounds of ammo and 100 guns 1,500 miles when the family’s big car is a minivan?
Seriously though, at some point your possessions start to own you instead of the other way around.