I've got 2 bal calfs on my phone,lapua one is really good but it's set up for there bullets,last time at 1000yds I dialled in 30.5 moa elevation and it was cock on,checked the bal calc and it was 30.52 moa,how close is that,I've got the strelock bal calc aswell which is similar,still prefer to dub check with my own drop chart