Thanks for the tip. I tried this (dry fired w/snapcap) on my 1911 and seemed to be a bit steadier. However, a couple of my 1911s have forward slide relief cuts and my index finger could get snagged it seems. I don’t know if I’d have the same problem with my Berettas.
I do think, however, that I wouldn’t use this on a revolver because of the chance for gas vent between the cylinder and the barrel forcing cone. The only revolver I have that wouldn’t do this is my Nagant Revolver which is a true gas-seal revolver.
Yeah it is very much a per hand per firearm kind of thing. Works in some situations, not so much in others. It is an alternative technique. Standard gripping is preferred but if the standard gripping does not work, it is something to try.