Bore Snake Gun Rope Cleaner 30 Calibre Bore Bronze Brush Bore Snake – By SSI You know how important it is to keep your firearm clean. The powder residue will collect in your bore causing barrel fouling resulting in decreased velocity accuracy and misfires. Directions For Use- Drop the feed line in through the chamber and insert the attached bronze brush. Grab the feed line at the end of the barrel and pull the brush through. Repeat as necessary.Then simply repeat the same process with the finishing bore rope. PRESTO !!! CLEAN AS A WHISTLE !!!