Easy to setup, use and collect data from...but where is the measurement being taken? - Garmin Xero C1 Pro Chronographs

This compact little device works well. It is easy to deploy and use. It will NOT register all the shots if you are rapid firing--as in controlled pairs. It seems to want a couple of seconds between each shot.

We also do not know where in the trajectory the velocity measurement is being taken. I have asked Garmin customer service to tell me how long the device takes between receipt of the firing impulse and the first Doppler pulse train so I can calculate how far in front of the muzzle the projectile is. This distance is an important input for ballistic calculations.

I also had some initial installation and connection issues with ShotView on my iPhone 11. The app would not let me get past the account creation step for some reason. It took a call to Garmin Customer Support to get it sorted out.