I've got several rods that I've aquired over the years, coated, SS and carbon fiber, the Tipton carbon fiber are my favorite, they work great with the Kleenbore nylon muzzle guide used on the chamber end, I trim one side of the guide flat so it indexes to the ejector/extractor and centers the rod in the bore. Rod guide options are listed in the FAQs too, Sinclair makes one specially for the Handi, but they're not cheap, but work ok, are chamber specific. Their TC rod guides actually work better with a little modification to lock under the extractor/ejector.
Tim