So how does the accuracy/features of the Exbal/NF software compare to the JBM calculator? I use that and also have Ballistic on my iPod Touch. However, out past 400 yards the discrepancy between its calculations and JBM can be significant, e.g. 1 MOA @ 600 yards. (I even consulted with the developer to get the inputs to match so that I am comparing apples to apples).
Incidentally, JBM has recently incorporated the G7 data for the bullets listed in Bryan Litz's new book - Applied Ballistics for Long Range Shooting (Book