Mostly I always have a range finder, unless hunting, as all electronic devices are illegal in my state.
So today just a range finder in the range bag.
I have a Krestrel elite, tested it out followed directions set it up for 650 yds with my rifle and load. Rifle#1 load#1 and tried it at 1010 yds. The $800 gaget seemed to work fine on the first try, with little wind shielded be a mountain side. Put it away and never used it again.
I don't need it to hit targets at long range where I shoot...I didn't need it 30 yrs ago, when it wasn't available...when I learned the wind is the most difficult variable, and wind meters, were usless shooting out across canyons with irregular small mountains and islands in between the shooter and the target. Wind goes in both directions simultaneously as it's funneled through mountains, hitting different velocities and directions constantly. Yep, the wind meters were usless, become familiar with the location and give it your best guess in mils, like dial a 2 mil wind. So the other variables were small in comparison. The conditions other than wind would fit into plus or minus 10 inches at 1000yds yards on the elevation turrent, easy to live with. Using the same exact load and reamer over 17,000 rds, exclusively at 1000 to 1400yds...Then changing everything, for the more modern components, then found myself bored with long range shooting, already done everything I wanted to do with it... it was a pain keeping up with a practice schedule, and access was being closed down to public lands, and getting more restrictions..driving out to the middle of the high desert was a long drive...but you could shoot for miles from an elevated position, just like the old days when I lived out there, and first started long range 1972 with a 45-70 as a long range gun..no electronic gagets, just you and the rifle, with big cast lead bullets...those bullets would skip like a flat rock on water...way out yonder, after the first impact. Some of the most fun to be had with a rifle.