I have been curious about this chrony as well.
The manufacturer's data says it will read 22lr and 223; seems like I have heard that the sub-22's are a problem.
As noted above, I have watched one being used at an indoor range with others shooting next to it and it seemed to work fine. The ability to set it up on the bench beside you (not in front of firing line) while shooting indoors would be a real advantage for me; it would be nice to easily chrony loads inside as well as outside.
Might have to have one.
