S.C. Code Ann. § 16-3-440: Principal or second compelled to give testimony.

Upon the trial of all indictments for dueling any person concerned therein, either as principal or second or as counseling, aiding and abetting in such duel, shall be compelled to give evidence against the person actually indicted, without incriminating himself or subjecting or making himself liable to any prosecution, penalty, forfeiture or punishment on account of his agency in such duel.