No real right or wrong here. Handle everything you can,you will know the one when you find it. In a pump or auto for a field gun 26"or 28". If going the double gun route sxs or O/U 26" makes for a real short gun and It swings to fast for me. I like atleast 28" barrels on doubles. Most trap guns are 30-34" they swing smooth. That's a whole lot easier shooting than you get in the field though.Depends on how you are doing your shooting also a 10# 30" BPS 10 ga is a great pass shooting gun, but I'll take my 7# Benelli M-1 Super 90 and 26" barrel everytime in a layout blind for the same geese. Just like potatoe chips see, nobody gets by on just one. Magnum_Man