First off I'll cop to being nobody from nowhere so that's this source.
And length and weight are different attributes
I have a 70cm barreled Mirage pigeon gun that will crush targets from the 27yd line. Aside from flyers, I used it for some time over the bunker and shot it consistently as well as anything tho I've never had a 25 in me at that game. Hack shooter but WTF, eh? Not long ago, just for grins, after I got a set of 70cm barrels for another Mirage, I decided to see how the IM choke in those barrels would do with 24gm loads from the 27. Worked just fine. My go to guns for about anything are 72cm, tho I have acquired 75cm barrels for a couple of them I just don't seem to muster up the need. Occasional diversion but no real need.
Standard skeet guns for decades were 26" and the international crowd seemed to settle on 70cm. Why longer barrels would be needed on a skeet field is a mystery to me.
Well, not really. Thanks to Mr.Digweed (and every time I score a primo gun or set of "short" barrels for incred discount prices I do THANK him), his large stature, and ready use of looong barrels, every wannabe thinks length makes the man. I say, Go For It!! I can always use a bargain when you off those useless short barrels hahahaha
Charlie