I have progressed from 28" (29" with extended choke tube) to a mere 21" now.
Prefer the shorter barrel as it is much easier to motor through brush. Longer barrel gave me no more advantage as far as range. Call in close and range is not an issue.
I went with a 20" Remington Cantelever barrel so I could easily scope the gun, remove the barrel as the scope is attached and can put my 26" back on and use it for waterfowl.
JW