As many of you that read this site, I like to shoot at distance. I still have not gotten to the point where I will shoot game past 500 yards and I still prefer the closer the better. With good conditions I am proficient (meaning I would bet 2 days tracking I could make a cold bore shot) to 600 yards on paper or steel which is to say a static target. My hesitation on game past 500 is the math. My question to the forum is How far would you be comfortable shooting at big game with easily readable wind with just your gun and a range finder? The phone blinked out and you have no ballistic app, elevation, nothing but distance and angle to target. Do any of you shoot game past 600 without an app? For that matter, do any of you even need an App, or do you only trust your own math? Only curious because I don't hunt with anyone that even knows what a ballistic app is let alone used it in a hunting scenario.