Do not hold your revolver with your two hands like you hold a semiauto.
Reminds me of the high tension lineman safety video we saw where they stuffed a weenie in the protective rubber glove with a pinhole in the finger and zapped it with high voltage. Pretty much same result...
You can't hold a revolver the same as a pistol. There are several two-handed revolver techniques and none involve moving digits forward of the cylinder. It's actually kind of difficult and not ergonomic anyway, but some people will manage.
I guess it’s just the world we live in that folks have to be told or shown not to put their hands where they don’t belong. The next video will be don’t put your finger over the muzzle like they do in cartoons. 
I have seen a 41mag Blackhawk destroy a expensive Tag Huer watch. Guy rested the gun on his forearm, cylinder gap by the watch face, boom, no more watch crystal
Myth busters did an experiment on this with chicken wings substituted for fingers, needless to say, it blew them apart. I wouldn't want that to be my hand.
Speaking of fireballs, the Keltec PMR-30 in .22 mag will light up an indoor range with the muzzle flash.
Does a pretty good job outdoors too.
Man, that problem is so last, last century.
Gun Review: Nagant m1895 Revolver - The Truth About Guns
Gun Review: Nagant m1895 Revolver - The Truth About Guns
Awesome solution to that gap. I learned something today.
https://www.gun-tests.com/handguns/arkansas-couple-files-negligence-suit-against-smith-wesson/
Gases escaping from the barrel cylinder gap cut off Brown’s left thumb when he fired the .460 Magnum revolver , the lawsuit states.
Gases escaping from the barrel cylinder gap cut off Brown’s left thumb when he fired the .460 Magnum revolver , the lawsuit states.
