I really meant 2 1/2 - 2.5". Most pre WW-2 European shotguns and even post war english shotguns have 2 1/2" / 65mm chambers, both 12 & 16 ga's. Most of my upland and waterfowl shotguns have 2 1/2" chambers. Even my favorite coyote gun has sxs 2 1/2" 16ga barrels over a 6.5 rifle barrel.

After the first shot the rest are just noise.

Make mine a Minaska

Heaven has walls and rules, H-ll has open borders