A bit of Googling will yield several references.
There was also a recent article in
Clay Shooter (the freebee one October 2013 Issue 29) called
"Shmokin'!",where MT Chambers talked of the advantages of a bit more choke.
This video isn't the full one sadly, but it shows that while 1/4 choke has the largest useful pattern at 30 yards, it drops off very quickly at 35 and 40 yards. It doesn't quite make it to 1/2 choke, but you can see the Blue coloured discs with 1/2 choke at 35 and 40 yards are MUCH larger, showing a larger useful pattern at those distances.
Most beginner misses are caused by; not enough lead, stopping the gun, poor foot position, general bad technique and
poor coaching.
What you are suggesting, is that i
nexperienced shooters, can break more targets by using open chokes. Experienced shooters can also break targets at greater distances with open chokes, due to their considerable experience...so why don't they use them?
A beginner who is missing targets with 1/2 choke, but breaking them with cylinder...is
"nearly missing them."
By giving the reward of a poor break or chip, with open chokes, is teaching bad sight pictures and incorrect lead.
Should we be teaching people to "nearly miss"?
Half choke is not tight. It can even be loosened with a suitable cartridge and will stand them in good stead for the longer targets...which they can't just ignore, if they want to build a score and progress.
I would not advocate less than 1/4 for a new sporting shooter (a person who is doing more than "having a try").
Once you have the experience and have learned correct leads for targets, then a more open choke could help if you are "playing the numbers", obviously. But you wouldn't be using that on a 40 yard, edge on crosser...would you?