i just use kestrel to spit out DA, then i input that manually into my calc.
That’s how I operate. Read DA on my Kestrel, feed that number into StrelokPro on my phone. A lot of guys do it all in the Kestrel, but I’d guess half of the guys on my average squad last year just use the Kestrel to get DA and their phone does the ballistics - that is to say, half of those who did SOMETHING, since some guys just show and go, no calc’s during the day.
How I set up, welcoming advice to improve: Before each stage, I feel out the wind at my position as I set up my bino tripod, then take a call against what I see down range. I pull out my Kestrel, swing it around a bit, then measure the DA at the shooting position, press down once to get to my wind screen (and I only measure full value wind, pointing my Kestrel cap at the target from behind the shooting position, no need for value-call corrections that way). If the current actual DA isn’t more than about 1000’ off of what I used to build my wrist coach cards, I don’t change anything. If it’s more than 1000’ or shots in the stage are longer than 1000 in that stage, I run it again and correct my card. I get to check wind local and at range visually, then confirm/correct wind local. I pull out my phone and confirm my data in StrelokPro if I have time no matter what, but I re-run for sure if the DA is off more than 1,000’.
I set my wrist coach cards up based on calculated DA the night before using weather report forecasting and local elevation - to the nearest 500’. I compare that data against DOPE, then sleep with confidence in my preparation. Everything else that day, I consider as corrections, which is either confirmed, rejected, or “no called” in my post-stage notes.