Of all techniques the one that feels most comfortable and secure for me is the high-thumbs-up grip as demonstrated by Chris Cerino. Are there any downsides to gripping the revolver in the manner?
I have not seen anyone grip a revolver like that before.
He says at the beginning of the video that he "does something different than they have in the past". When it comes to shooting revolvers this is not a good thing to hear, in my opinion. I say that because a good many excellent revolver shots have come and gone over the decades, some extraordinary, and while there have been variations in grips used by them I don't believe that this is one.
The downside: It looks like a grip designed to fight recoil by pushing forward and down on the frame with the offhand thumb. This will have a tendency to push the barrel the same way and cause it to dip and point in one direction or the other. With stronger recoiling loads the tendency will be to push harder.
It also seems it will add to any flinch which the shooter may have. There are several different things that are called "flinch" but one of the most common is anticipation of the shot and pushing forward on the gun just as the trigger is pulled or gripping the gun harder. I believe this grip would make that issue worse.
The thumb can also slip easily, it seems, spoiling a shot.
It can also
possibly hurt your thumb with heavier recoiling rounds.
So I think there are more downsides than good.
But try it out and see what you think.
I have changed grips a couple of times over the years but each were variations on grips used by top shooters of years past or of the present. Individuals who have made an impact on wheelgunning.
Along with a good set of stocks that fit your hands it has helped me some over the years.
Good luck.
tipoc