Posted 03 November 2009 - 10:28 AM
I have a Prochrono Digital that has failed twice. The first time it went dead and was repaired under warrantee. The last time it just stopped updating the velocity. I stopped using it and haven't tried to debug the problem. Now I'm using a CED Mellinium, which I like a lot. Long cord, big display. I've set it up at 100 yds to measure downrange velocity and I can read the display just fine with a binocular. No failures yet. For both chronos, I found that they stop working once the sun sets and the sky screen is not longer directly illuminated. Also, they are more reliable if I shoot close to the optical sensors, as opposed to near the sky screens.