16-gauge
There was never any need for the 20 or 12 gauge after the 16 appeared.
Universal truth right there.
Agreed i own a 16 gauge hunted many years as a kid with a 16 gauge. but price and popular use of the 12 and 20 gauge made me change. 12 gauge, 22 LR , 30-06 ,45 ACP ,38 and 9mm have made the test of time, maybe a few others no matter what we feel is better. i am surprised how few loonies posted a 22 Hornet ????