I have a regular chronograph, I bought a Magnetospeed, and I now own a Labradar, so I have had all versions. The Labradar is far and away the best chrono I own. The regular chronos are a pain to set up, you have to wait for a range shut down to go in front of the line. The Magnetospeed is easy to attach (but it tends to slip after a few shots) gives you the data you need, and fits all my rifles, but it effects the point of impact when hanging on the end of my barrel, so It is not as good for load development.
The Labradar is easy to set up, does not effect impact point, and easy to operate from an app on my iphone. I also use an external Lithium-ion battery, and it runs for days on that. I set mine on a tripod in front of the bench because my muzzle is off the end of the bench, so the mounts others speak of are useless to me. I got the "travel" tripod on amazon.
I made a sighting device out of two pieces of telescoping brass tubing. ( K&S Precision on amazon, I used the 1/4 od and 9/32 od) I look thru the tube and adjust the ball head on my tripod to see the target, and lock it in place.
I highly recommend the Labradar, AND the Labradar app on your phone. It is SO much easier to start a new series, ARM and DISARM, and look at the series result on the phone app, rather than the Labradar. Having an external battery (again , amazon) a ball adjustment on the base, and a decent sighting arrangement makes it invaluable.
I do not have an external trigger, I set my muzzle about 3-4 inches from the Labradar, and about 1 inch in front, and have the settings on the 1-6 inch setting. Depending on your setup and Labradar mount the external trigger may be helpful.
Edit; I do not have smaller than 22 bullets, or higher than 3900 fps, so all my work is within the Labradar limits.
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