S.C. Code Ann. § 31-18-40: Application of noise control ordinance.

(A) A county, municipal, or state noise control ordinance, rule, or regulation may not require or be applied to require a shooting range to limit or eliminate shooting activities that have occurred on a regular basis before January 1, 2000.

(B) A county, municipal, or state noise control ordinance, rule, or regulation may not be applied to a shooting range that was in compliance with a noise control ordinance as of the date of its establishment, provided there is no substantial change in the use of the range subsequent to its initial compliance.

(C) A county, municipal, or state noise control ordinance, rule, or regulation may not be applied to a shooting range that was in existence prior to the enactment of a noise control ordinance, rule, or regulation, provided there is no substantial change in the use of the range.