Uh Sheriff, one doesn’t need a CWP to defend yourself in your own home, well, at least where I live and I would be shocked if it was required in South Carolina.
No, you don't need one. There was a scene in last night's Lethal Weapon in which a woman hears a noise downstairs and urges her husband to investigate. He won't do it. She grabs a shotgun, loads it and walks downstairs to see two burglars. She shoots one dead center and catapults him into the Christmas tree. The other escapes. Later, somebody comments, "Does she have a permit for that gun?". Although this happens in California, I can't believe even in California you need a permit for a home defense weapon.