Following is a video showing the proof of concept of hanging the FX Radar Chronograph off the end of an airgun barrel to get accurate readings. I previously made a video where I showed that the placement of the chronograph is very finicky. Very slight changes in barrel alignment result in untrustworthy readings or missed readings altogether.
Copying an idea by Steve Allen of Airgunology, I made a bracket out of cardboard to hang the chrony on my barrel. I am pleased to say that doing so solved all my issues. The unit is now consistent, easier to set up, and no longer misses readings! The readings are now reliable as long as whatever you use to hold the chony keeps it from wobbling or sliding around as the barrel moves.
Using my trusty Caldwell Chrony, I tuned my Taipan Veteran Long to shoot a variety of different mass pellets at 900 fps. In this video I retest the tune of the gun using the FX chrony and get stellar results. Check it out.
https://youtu.be/XFwZnfji7N8