Almost any "lightweight" 12-bore gun you pick up will have had the barrels struck way-down from the factory. Any 2-inch gun you measure will be no-more than .022 or .023. From what I understand, guns pass proof routinely in England now that are only in the high teens (.017 & .018). When you read the barrel information provided by Holt's on lightweight gun in their auctions you will commonly encounter this on guns with very recent proof dates.

Last edited by Lloyd3; 08/22/17 10:32 AM.