I've used both Ballistic and Shooter. Either one will get you on paper but it's just as easy and a lot more accurate to just put together a DOPE card for your specific rifle.
Strelok is pretty good and free version is all I ever use. It was within 1-2 clicks (1/4 inch clicks) on ever setting while making a dope chart on a friends AR from 100-700 yards in 100 yard increments. That sold me on it.
Bam Bam