Quote Originally Posted by aris View Post

I also found this video comparing FX against a LabRadar - which is most certainly suitable for full-bore - but pricey. It compares favourably within 1fps. Quite incredible.
Based on my experience using fixed head doppler radars that LabRadar looks to be too far away from the gun to give an accurate reading for muzzle velocity. One of the shots also gives a 3ft/sec difference between the two which would have been enough for us to have rejected that shot in our trials. Our radars were required to agree to within around 2ft/sec or less with muzzle velocities of 2500ft/sec.

Both the LabRadar and the FX are okay for general use chronographs but are subject to errors just like any other chronograph costing a fraction of the price and they probably need to be positioned more carefully than your average chronograph for an accurate reading.