Having thought more about what I wrote I would suggest to anyone concerened about using car wax, use the ones not listed as a cleaning wax. The cleaning waxes are the ones that have the polish in them. Something else to think about is the polish left in the case from tumbling, no one seems to mind that. I still contend but this just my opion it would take so many thousands of rounds before there would see any wear. Also would not using jacketed bullets be more harmful? How bout using JB bore cleaner?