I have the ProChrono, a Magnetospeed and the LabRadar.
The only one easy to use with handguns at an indoor range is the LabRadar.
If you can afford it get it.
No setting up down range if it's possible to do so at all.
Everything is right there beside you .. literally inches away.
I recommend using a tripod unless your bench is concrete.
Ours are plastic and bounce.
The LabRadar wants to be as stable as possible.
The readings are slightly off from the ProChrono but will be good for developing loads.
Search for threads in here about the LabRadar.
I published a comparative test I did using both last summer.

The learning curve is a little steeper than the optical or magnetic chronos but you will get it within a day or 2.
The trick is to get as close as possible to the chrono without subjecting it to too much blast.
A revolver needs to have the cylinder entirely in front of the unit.

This thing produces much more data than just a single velocity reading.
It can and will record the velocity continuously for the bullet's entire flight.
You can pick 5 ranges to display the velocity on the screen for each shot but hidden in a file is the whole darn thing.
This allows you to calculate the actual BC of a bullet at the range you are going to use it at.
Big bore bullets will track to longer range than those skinny .22's.

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NEMO
"Everything 44"