S.C. Code Ann. § 23-31-510: Firearm or ammunition, local regulation prohibited; discharge on landowner's own property.

No governing body of any county, municipality, or other political subdivision in the State may enact or promulgate any regulation or ordinance that regulates or attempts to regulate:

(1) the transfer, ownership, possession, carrying, or transportation of firearms, ammunition, components of firearms, or any combination of these things; or

(2) a landowner discharging a firearm on the landowner's property to protect the landowner's family, employees, the general public, or the landowner's property from animals that the landowner reasonably believes pose a direct threat or danger to the landowner's property, people on the landowner's property, or the general public. For purposes of this item, the landowner's property must be a parcel of land comprised of at least twenty-five contiguous acres. Any ordinance regulating the discharge of firearms that does not specifically provide for an exclusion pursuant to this item is unenforceable as it pertains to an incident described in this item; otherwise, the ordinance is enforceable.