I guess I have been a bore but I've enjoyed this little exercise and I look at things a bit differently now. I still believe guns that have gone though a proof house should logically be called gauge as in 12ga. However when a barrel has been bored out to where it is no longer in proof because of the extent of the over bore, but still is chambered for a 12ga cartridge then it would logically be called 12 bore. A gun like the Mossberg 835 which is chambered for a 12ga cartridge but has a 10ga bore so as to shoot the 3 ˝ 12ga cartridge would rightfully called a 12 bore, as would a number of other over bored guns.

Last edited by pooch; 03/04/14 02:53 AM. Reason: syntex