0.729 inches or 18.5 mm
Nominal measurement - .729 inches/18.5 mm
A shotgun with a 12 gauge bore. Gun gauge is an old traditional measurement derived from the number of balls of the size to fit the gun that can be made from one pound of lead. A 12 gauge shotgun will have a bore of .729 inch (18.53 mm).
The AK-47 has a 7.62x39 mm and the average double shotgun can have 20, 18, or 12 guage, the power of a shotgun is greater the lower number of guage
Check the internal diameter of the barrel (disregarding the choke diameter). A 10 gauge is 0.78" (19.7 mm) A 12 gauge is 0.73" (18.5 mm)
around 300.00
A shotgun with a 12 gauge bore. Gun gauge is an old traditional measurement derived from the number of balls of the size to fit the gun that can be made from one pound of lead. A 12 gauge shotgun will have a bore of .729 inch (18.53 mm).
The 2 letters MM indicate that your Browning shotgun was produced in the year 2000.
0.5625 G mm'
12 mm. 12 mm.
The "mm" is the abbreviation for millimeters. So "12 mm" stands for "12 millimeters"
0.729 inches or 18.5 mm