Thread: Breaking in a new barrel

Brand new walther barrel installed on my 8mm yugo M48, just shot 5 round groups while sighting it in quick clean with ballistol and dry and continue for 20 rounds. Once i got home carbon cleaner and then copper remover. Have fired about 60 rounds in it so far and groups great and will just leave a small amount of copper in the bore, once copper builds up to much i will remove that. I think its more important to use a carbon only remover after shooting and a bit of copper in there is fine. I use the KG1 products from reloaders.