S.C. Code Ann. § 16-3-450

When two or more persons shall be charged in any indictment for fighting a duel or being concerned therein either of such persons may be used as a witness in behalf of the State by having his name stricken out of the indictment, or otherwise, at the discretion of the Attorney General or solicitor or other attorney acting for the State conducting such prosecution, of which an entry shall immediately be made on the minutes of the court.