@Jamo I would upgrade. I use to have a Leica 900 now have the 1600b. I just range, look at my drop chart and dial. I use to have to range, open my phone, open the app enter range, enter the angle, look up pressure on my watch, enter that, get the solution, then dial.
TBR definitely quicker. I just have an MOA dial but it is still quicker.
I did my drop chart for standard pressure and at sea level.
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