i am skeptical of all the published FPS for some of these guns. as i understand it, they use super lightweight pellets to shoot thru the chronos.
even my newest gun, they sent a printout of 20 shots thru the chronograph. it was blistering fast and i noted they were using the lightest .22 cal pellet. whatever.. i shoot a 18 gr pellet...no, i "lob" a 18 grain pellet.
my friend in college had a target gun. we would clip lemons off the tree in the backyard from our flat's window. in san francisco. very legit and legal i'm sure. that thing was not fast, but dang it was surgical.