Picked up a couple .22 the other day. One is a Remington target master. In the process of cleaning it up I felt what appeared to be a bulge in the barrel approx 10cm from the muzzle. When you look down the barrel there appears to be a machined groove in the barrel?. Was this ever done deliberately or has something else caused this?https://uploads.tapatalk-cdn.com/202...2e63a57e7b.jpghttps://uploads.tapatalk-cdn.com/202...a82a780258.jpghttps://uploads.tapatalk-cdn.com/202...49382c05c8.jpg
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