Does anyone know how much fps does a CR600W give specifically in .22 cal

I would like to know if anyone has tested this. A cr600w rifle in .22 cal. anyone knows the fps it can give for 14.3 grain pellets? i don't have a chronograph but i don't see videos of the rifle and it's fps doesn't really specify what grain pellets it gives. sometimes i see 560-550-500 fps advertised and i don't really know which one is correct. is that even too much low power? 
 
Mine is in .177 caliber but this owner of a .22 got 520fps with Crosman 14.3gr (about 8.6fpe) at just 50F ambient. It would produce more at a higher temperature due to the temperature sensitivity of CO2.
https://www.gatewaytoairguns.org/GTA/index.php?topic=121557

Note, like most CO2 guns they are gas hogs in stock form. I set mine up with a bstaley O-ring buffer and the shot count more than doubled from 25 to 54 with almost no change in velocity.
https://www.gatewaytoairguns.org/GTA/index.php?topic=143793