Great free app

Ive been using this app for my Stag 20" target AR-15 and Norinco M14.
Super accurate for adjustments.
Its dead on for the 168gr sierra match king.
Though I would not trust the sight hold over given in the app. Different scope and different size. Makes a huge difference on the hold over.
Over all super app for free.
If the developer could fix the "Mark" hold over with variable power itd be amazing.

C9-Gun about iStrelok