I've got sevral in my cleaning kit. The v shaped ones that can screw on to the bottom of a ram rod and used to clean with. I like tow. I start fires with it or use it for wading. I can clean the lock or outside of the barrel with it. However I cant get it to work in the bore for cleaning. Mostly I show hem off and every now and then use it to fetch a cleaning patch that slipped off the jag.Do you use them and how?