^^^ This is true, Gough Thomas experimented with this many years ago & there is an article in one of his books on the subject, He was talking spreader cartridges for shotguns of mainly 12 bore & the same effect was noted. Rifled chokes opened the shot cloud markedly. Obviously such items would need an fac today.
As Jerry cornelius points out a Giffard shotgun may work quite well with these. But from experience with a 9mm rimfire shotgun you are never going to get good patterns from shot clouds this small. The 9mm rimfire is good for about 8 yards max, 10 yards is stretching it. The driving wad disturbs the pattern centre so much that by that distance the pattern is like a donut.