Hi, it took awhile, but I finally shot the cheap 20 gauge barrel from Bergara several times. It fires alright, but just about every time the action sticks, and is hard to open. Also, I can just make out a small pin hole in the primer after the empty shell is removed. Does this sound like a defect with the barrel? I've never had that happen before. I've tried a couple of different brands of shotshells; Remington, Winchester. Also, tried both 2 3/4" and 3" shells; same result. Any opinions or suggestions about what's happening?