The reason it's so popular among hitmen is precisely because of its lower power.It will enter the skull,but will not exit.Instead,it ricochets around the inside of the skull effectively destroying the targets brain.
As far as the jamming issue goes,if your weapons are properly cleaned and maintained the odds that they will jam are extremely low.
Tony Spilotro was suspected of using a .22 with a suppressor to kill Tamara Rand and a few others while he was Chicagos guy in Vegas.
