I found an article by Ron Avery in which he discusses the types of flinching from shooters, even experienced shooters who are not afraid of the recoil. http://www.policeone.com/pc_print.asp?vid=1883895 I have found that one out of 10 times I can see the muzzle drop a small bit when I pull the trigger on an empty cylinder. I am not talking about dry firing, I mean when I am shooting and have either a dummy round or no slide lock. Ron points out that one of the reasons shooters have that issue is the mental tension build up when trying to hit small targets. It is a good read.