Originally Posted by MadMax
Last I checked, big red radar chronos don't seem to work very consistently for our tiny 6mm pellets. They may have improved, but I used to see quite a lot of shot to shot inconsistency last time I used one. I confirmed that my gun wasn't itself inconsistent by first testing it with an optical chrony.
Agreed, usually when there is such a variance in testing one should first assume the testing equipment is faulty then explore other variables. Find a friend with a superior chrony and try again.