caleb90 Wrote:yes i checked barrel port size and its correct. also check location of port length wise from barrel shoulder and block shoulder and all is good. i made up a dummy round chambered it and upon extraction there was resistance trying to get bolt to unlock. checked brass and shoulder had a mark on it. checked all my fired brass and they have the same mark on the shoulder just deeper. so it appears to have a rough chamber. going to run 50 rounds through it and see if it clears up
Sometimes brass gouges are due not to a rough chamber but because the brass hits a sharp corner in the barrel extension on one side by the feed ramp on extraction. See the forum thread using gouging in the search box.
http://www.65grendel.com/forum/showthrea...ass+gouges