I have both a 26 and 28 inch barrel for my Browning B-80...A longer barrel helps you with pass shooting, the added weight out front keeps you swinging through the target after you pull the trigger....

I use the 26 inch barrel for close in shooting like quail, rabbits being run by begals, and doves that are coming in to corn, sunflowers, in other words, situations where an Improved Cylinder choke is your best choice because the shots are close and some shootinng is spot shooting...

I use the 28 inch for pass shooting crows, ducks. doves in the late season, deer with buckshot and in these cases I usually have a Modified choke in the barrel...