I am in the middle of rebuilding my data book and I want to switch over to using DA. I was going to use JBM as highlighted here http://www.arcanamavens.com/LBSFiles/Shooting/Downloads/DA/ but I see it doesn't compensate for your change in velocity because of a change in temp. Since in Montana we go from 100+ in the summer to -20 or worse in the winter, I would like that to be done already. I see on my shooter app where you can put in the DA and the temp for a firing solution and it compensates for the temp change from your zero temp. Has anyone used shooter to build a card like that? Also, I'm still trying to figure the whole DA thing out so if I am off on something feel free to correct (I'm sure there are plenty here that would have anyways, haha)