Easy-Peasy. I use to use this A LOT. You'd be surprised how accurate you can be on known-sized targets out to 800 yards. Here's how I do it.I got it for both. Still working on the ranging formula though. My numbers are a bit off. Not sure why, I'm pretty decent at math.
I got the mil/mil reticle/turrets. I'm LEO and my dept doesn't have a Designated Marksman. Yet! Lol, I'm looking to training into filling that void but I have to front the cost.
That's the simple way and probably the best for 90% of the people out there. I'm only running MOA scopes theses days and use them nearly every time I shoot to calculate misses. It's quick, it's easy and it gets me on target for the second shot nearly every time.Meh, i'll stick with MOA scopes. Most scopes are 4MOA from center to where the bottom post starts to thicken, that means 16" at 400 yards. Most deer are around 16-18" from brisket to shoulder, if you put the crosshairs on its shoulder, and the tip of the post touches its brisket its at 400, any gap and its +400, if its covering hair its <400.
More than 400 I just closer /shrug