03-06-2014, 11:27 AM
(03-06-2014, 10:51 AM)jeremyyoung Wrote: So a 12 bore and a 12 gauge are the same?no, bore refers to the size of the hole, also called the caliber. 12 gauge refers to a gun with a bore of the correct size to fit a spherical ball of lead of 1/12 lb. A 12 ga has a bore of .729 inches
http://www.hallowellco.com/bore_size_chart.htm

