Are used barrels worth buying? From time to time I see used barrels on eBay or other places like. I am planning a 6.5 project and I found a used pac-nor barrel. It is chambered in 6.5-284 and I would re-chamber to something bigger. The ad says it has 1100 to 1200 rounds down the tube, but since I am thinking of something bigger the new chamber should take care of the old chamber and throat. If I can get it cheap enough, would it be worth the gamble?