Montana X-Treme Bore Conditioner Oil 6 oz is a lubricant that was formulated to increase extreme accuracy in precision match-grade barrels. It is a highly refined, low residue oil that has been designed to eliminate the factors that cause oil to gum and congeal. Regular use after a thorough cleaning will reduce copper buildup and increase accuracy due to reduced fouling in factory and match grade barrels. Helps eliminate the fouling shot typically required with a clean barrel. Excellent for reducing sabot fouling in muzzleloaders. Contains no PTFESiliconesSyntheticsThat are known to leave residue and affect accuracy