I wanted to go back and do a full Chronograph Chrony test for my Umarex PX4 Storm and I thought I may as well do a live target shooting test while I was at it. I also thought I would try out my under barrel laser sight and see how it worked and what it looked like while filming it shooting in action. The PX4 shot an average of around 340 fps using 6.9 grain RWS pellets.
And lastly, I pulled out my Casio high speed camera and shot the blowback action of the PX4 Storm, first in real time and then also slowed down to 420 frames per second.
Here is my YouTube video showing my Chronograph and Shooting results for the Umarex PX4 Storm: