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).
12
12 gauge the higher the gauge the thicker the item is
12 gauge is thicker than 14 gauge.
12 gauge is thicker than 20 gauge. The lower the gauge, the thicker the sheet metal or wire.
12 gauge by far
The 12-gauge is thicker.
Some are 12 gauge, some are 16 gauge. The MX16 is a 12 gauge frame; same frame size for both gauges.
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12 gauge
12 gauge Springfield Arms 1916
The recommended gauge of wire to use for a 12 or 14 gauge wire is typically 10 gauge wire.
The term 12 gauge is used to describe the caliber(bore diameter)of your shotgun.A 12 gauge barrel is 72 caliber,but the word gauge is used so people can determine you are talking about a shotgun,instead of a rifle.