Proof Positive jags eliminate the annoying false indication of copper fouling in your bore caused by traditional brass jags. Using a proprietary alloy and secondary treatment process, the new Proof-Positive jags are: 100% Barrel Safe 100% Brass Free 100% Chemically Resistant 100% Heavy Duty For use with Bore Tech flannel patches These are male threaded 8/32″ but can be fitted to Dewey / Parker Hale via an adaptor
