What is the 30 PC40??

Well it started out as a conversation between myself and Luke at ProCal about what to do with a spare 6mm barrel. We took inspiration from the 6mmAR guys website and after they decided not to send us a reamer we decided to go our own way. A little while later Luke came up some specs and a 6mm PC40 reamer was ordered. Now that was a while ago, the 30BR needs a lot of prep time spent on it so Luke decided to push in a 30cal neck and throat reamer and we now have a 30 PC40, or Pro Cal 40 degree.