Lab radar is the bees knees!
A bit expensive yes, but super precise, and gives much more info on each shot.
Being able to shoot, and collect both group development info and velocity data is just more cost/time effective for me. With the cost, and at times, difficulty in obtaining some loading components, being able to shoot both groups and collect velocity data is a major plus.
One of the features that I like about the Lab radar is the ability to track your bullets at predetermined intervals to the target. Knowing the average velocities at the target is handy to compare advertised BC values to real life values.
Another cool thing I noticed about this feature was when I was shooting high performance cast bullet loads. I was shooting 200 grain .310", #311299 cast bullets at progressively increasing powder charges (with powders normally associated more with jacketed bullets). I wanted to see how close I could get these cast bullets to shoot at jacketed velocities and maintain acceptable accuracy.
The Lab radar picked up that the 100 yard velocities of some rounds were distinctly different than the rest in a given group. Upon closer observation, I usually could identify a slight flier on the target, to the bullets that showed a different resultant velocity at 100 yards than the rest of the rounds in that group (even if two bullets started out at the same relative velocity, but arrived at the target at different resultant velocities).
With this information I believe that I can track at which pressure point the cast bullets (with this particular alloy) are experiencing some structure damage during the firing sequence. As this damage starts to effect the bullets structure/shape, the result is either a flier caused by an altered bullet shape or resultant velocity differential at the target.
It was surprising how much velocity I was able to get from a cast bullet before the load stats and groups started to open up. This was with both a Rem 700 Varmint Laminate rifle (308 Win) 1:12" twist and a Browning B-78 (30-06) and 1:12" Twist.
At least it seems to appear this way.
Sorry about the side tracking!