The Firing Line Forums - View Single Post - New Mossberg 12 Gauge Bore Diameter: .733"

oneounceload · December 8, 2010, 02:59 PM

.002 is an acceptable tolerance for most makers. Several companies "overbore" their barrels to even larger diameters - Browning and Kolar are ones that immediately come to mind

December 8, 2010, 02:59 PM	#4
oneounceload Junior member Join Date: April 18, 2008 Location: N. Central Florida Posts: 8,518	.002 is an acceptable tolerance for most makers. Several companies "overbore" their barrels to even larger diameters - Browning and Kolar are ones that immediately come to mind