From ATF:
Q: May a nonlicensee ship firearms interstate for his or her use in hunting or other lawful activity? Yes. A person may ship a firearm to himself or herself in care of another person in the State where he or she intends to hunt or engage in any other lawful activity. The package should be addressed to the owner. Persons other than the owner should not open the package and take possession of the firearm.
You'll have to follow the regs for shipping, and no handguns.
Long guns only.
Usually you cannot buy a handgun outside your home State, although some States have an Active Duty Military exemption (as does South Carolina).
You would still have to have a handgun shipped to a FFL in your home State.
And NC would have to allow purchase in another State, either contiguous or non-contiguous.