Not sure about this. Maybe if you are a superb shot barrel length of a few inches will make a difference.

But, I confess to shooting my 29" Dickson sxs weight 6-1/4 lbs, as well(or as poorly) as my 26" Franz Sodia, an o/u weight 6-3/4 lbs. The Sodia has a tighter choke in the top barrel than the Dickson.

Key is, as Jack has put it, to shoot.

Regards