I think that crack is an artifact. It loops back onto itself if you follow it upwards. Could be a fiber. But the overall point to me still is why do many of the alterations that we do to guns. I no longer recolor guns. I no longer alter chambers, I just load shells that fit and are the safe pressures. But to be fair I have too many guns so it a gun is "marginal" for use I just do not use it anymore. It is a judgement call and people need to figure out their comfort level and do as they deem fit. The too short chamber, anti Damascus police, have no room in my life.
