Perfect resource for long range shooting

Ive been using this app for over two years and it is fantastic. If you input correct data you get perfect results. Ive gotten three of my guns out to 1200 yards with good dope from shooter. I find inputing G7 data works much better for anything out past about 600 yds. Measure your velocity, input the G7 BC and go shoot.

RPR shooter about Shooter (Ballistic Calculator), v1.3.0