What is with the FX chrono V2 ?

In the settings options, you'll see a menu selection CALIBRATE - ADVANCED. This is where you set the sensitivity. For the one I was using, -1.0 did the trick. Mind you, I test down a narrow hall, so turning down the sensitivity worked for me. Otherwise, and movement would be picked up and recorded, including flies passing through the radar cone.
Gotcha thanks!! Are you sure that’s increasing sensitivity though?! I tried it with .22 and it seems it just knocks of 1 or 2% from the speed it read?!

With the .177 no change (meaning to issue with certain ammo still there no matter the setting).