I've never owned a co2 pistol. But have been shot by them! Unfortunately they are a bitch. The guy got it through chrono by fireing 3shots quickly then a 4th into the chronograph. With the cold gas it was only about 2 fps under the 350 limit on the site. His first shot on the new bulb was at 425fps. And apparently this is the fps it does on any cylinder when it hasn't been fired recently, he promised he would fire 2 shots at the floor before shooting at anyone. In the heat of the moment he fired the first shot from a fresh mag at me from 1m away his shot hit my finger right above the nail. It smashed the fibres of my glove making a 2mm hole in my glove and I still have a scar on my finger. I don't think CO2 pistols should be skirmished unless they have an ability to control the volume and pressure of co2 delivered.