I have all this stuff,
The Labradar the best range I have gotten a reading is 72 yards... does not work for downrange in its current form
An Oakwood Tech H Bar and my software has the MV feature turned on, it's complicated, and expensive but works
An Acoustic SuperChrony can work a bit but you have to be really good at lining it up and you must be supersonic
Reversing the numbers using software is the easiest if you have the dope to work the numbers. Which we always have the dope.