Barrel length has a lot to do with how the shooter shoots the shotgun.
I prefer shorter barrels, for a quicker swing. However, for hunting and patterning purposes, shorter barrels tend to pattern high. Often I'll compensate for this with a Hi-Viz type bead sight.
Semi-auto: Russian Baikal MP-153 w/ 24" barrel, for waterfowl.
Pump: Mossberg 500 Turkey Special w/ 20" barrel, for coyote & turkey.
Bowhunter57