Not necessarily. Take it to a gunsmith to find out the correct caliber/gauge.
20 gauge is larger
A 20-gauge refers to the size of a shotgun, indicating the diameter of the shotgun bore. The gauge number is inversely related to the size of the bore; specifically, a 20-gauge shotgun has a bore diameter of .615 inches and is smaller than larger gauges like 12-gauge. The 20-gauge is popular for its balance of manageable recoil and effective performance, making it suitable for various hunting and shooting activities.
12 gauge is thicker than 20 gauge. The lower the gauge, the thicker the sheet metal or wire.
a 20 gauge is a type of many shotguns but it is smaller than a 12 gauge but bigger that a 410. a 20 gauge is a good shotgun for all ages.
20
20 gauge is equel to 0.8mm
20 gauge is thicker (the lower the number, the thicker the steel).
Convert gauge to mil
310 revelation 20 gauge
12
The metal of the 17 gauge waste drain is thicker than the 20 gauge.