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