Apologizing for side stepping the question.
Fixed sight revolvers are best suited for defensive shooting. As such, they would be used a close range and the shooter would likely be better off rapidly "point shooting", "instinct" shooting than to try and line up the sights precisely. Therefore, at those ranges and circumstances, the difference in impact between the loads do not make much difference. Anywhere on the paper target is good.
For other purposes (than defensive shooting), adjustable sights are a great advantage and the question becomes more relevant. That is why many of us own several of each...some with, some without.
Please forgive me for stating the obvious.
Sometimes you get what you pay for, sometimes you only pay more for what you get.
Three shots are not a "group"...they are a "few".
If the Bible is the literal, infallible, unerring word of God...where are all those witches I am supposed to kill? (Exodus 22:18)