Alternatives to Oehler 89 and Shot Marker

[Rio Precision Gunworks]

We are building out 600yds range that is closer to our shops (have further ranges, but have to travel about an hour). Plan is to have electronics at 100, 300, and 600yds. Currently, we have some Shot Markers and will likely pick up an Oehler 89 system.


Looking for any suggestions on other testing or data collection equipment. Would like to keep budget under $20k or so for electronics.

Thanks