i'm happy with it, just set up first rig with it, i used chrony and kestrel meter, zerod gun a 220, then shot to 360 and 498 yrds, counting the moa clicks need to get there....recorded the atmospheric conditions and brought that data home....
one thing i didn't have was the bc for the fusion ammo i was shooting, could not find it anywhere....so i guessed different bc's until the chart matched my actual field findings....i made a chart to 800 yrds with that data, and used it to shoot a rock across a valley at 701 yrds perfect.....so i'm pretty happy with that program....btw, use a bc of .465 for 130 grain .270 cal fusions for all you .270 shooters and you'll be real dang close to way out there