Yes, 20 gauge is the second most common gauge for shotguns in the last few decades.
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.
12 has a bigger bore.
These shotguns came in 20, 28, 16, And 12 gauge calibers
google images
Rifles are referred to by caliber. Shotguns are referred to by gauge.
100,000
20 gauge marlin ou 2 triggers
try: SAVAGE SHOTGUN.COM
75-100 yrs ago
50-150 dollars
Utility grade made @ turn of the century
1929