Re: shooter app temp factor!
Eric stated the correct spot to make the adjustment, but you've gotta have accurate data over a pretty wide temperature swing in order for it to increase how accurate it is.
I'd suggest tossing some ammo in the freezer over night and then to the range in a cooler with a thermometer so you know your exact powder temp when you fire. Use that MV and get confirm it via drop.
Then do the same thing with your ammo in a pocket close to your body so it can warm up to 90 or so. Get that MV and confirm via drop.
Then find the difference per degree. Wham bam, thank you technology.