Worth it!
Never shot past 100. Went out to a 600yd range and wasnt hitting the target, down loaded the app (friend recommended it to me) and put in my info and hit the target the first try after using the app and adjusting my scope accordingly. The data base on this app is very impressive and if you enjoy shooting, its very worth it!
Tyfullhiss about
Ballistic: Advanced Edition, v6.2.1