75-100 yrs ago
Rifles are referred to by caliber. Shotguns are referred to by gauge.
100,000
Yes, 20 gauge is the second most common gauge for shotguns in the last few decades.
Utility grade made @ turn of the century
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
Hundreds of years ago to the present. Originally, Gauge was the number of lead balls per pound. A 20 gauge is 1/20th of a pound in weight, or about 7/8 oz.
google images
Crescent Fire Arms made millions of similar shotguns with over a hundred different trade names. I doubt if anyone has a good estimate, but there were a lot. 20 gauge will be harder to find than 12s.
Excel shotguns were made by a couple of different manufactures, notably Crescent Firearms and Iver Johnson, for sale by Montgomery Wards through their catalog before World War 2.
20 gauge marlin ou 2 triggers