Gotta wonder where some of these guys get their ideas. Just pulling something out of your a$$ and writing it in a book or article don't make it so.
Batha (if quoted correctly) is full of crap. Shortening the shotstring at skeet distances is pointless since there isn't much of a string developed at 21 yards. The advantage of the Cutts is an evenly distributed pattern, something which can be experimentally proven. Shotstring length is only of concern at long distances and then only on crossing shots. If you actually look at the data from Burrard and Brister this becomes evident.
A long shotstring is never desirable. The ideal is to have all your shot arrive at the target in a single plane, such as you would mistakenly think it does from just looking at a pattern board.
The pattern is three dimensional. The target does move as the cloud goes by, and the length of the string from the target's perspective results in a pattern that is oval rather than circular. Thus the same amount of shot covers a wider lateral area resulting in poor performance.
Hard round pellets protected from bore scrubbing, buffered, and gently accelerated result in tight long distance patterns and minumum shotstring.
