LOL! Good luck. Hope you can try before you buy. I'm on my 3rd chrono and doppler radar is something I'm very interested in when I have to buy a 4th. Please keep us updated. I have the Pro Chrono from CE. There is always some variation when shooting identical loads on different days, or at different ranges and different orientations like North South vs East West, even with minor changes in elevation. But they do occur at the same range at different times while I always set up 12' from the muzzle to the middle of the skyscreens.
I would definitely like a more precise unit at next purchase!