[rhuff]

Originally Posted by DocDave

Thanks all for the reply. When I look down the chamber there is a small circular ridge where the rifeling starts.

Thanks

That is the chamber ridge where the case mouth of the 9mm cartridge stops for proper headspacing. Only the bullet(projectile part) extends beyond that ridge. It sure would help if you could supply us with a photo of a 9mm cartridge in the chamber of your barreled receiver....off of the frame. If this is impossible, I understand.