For your bird barrel, you probably do want to usea rifled slug. Such slugs have been used in smoothbore birdguns for about 70 years with no problems. And if you should buy a rifled barrel or a rifled choke tube, you probably want to use a slug designed especially for rifled barrels. ...
A computer-controlled laser etching probe etches a firearm-identifying indicia such as a barcode encoded serial number into the barrel and breech of a bore of a firearm. Owner registration data coupled with the serial number is stored in a central database. A computer-controlled scanner reads ...