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# How to figure range for up or down angles?

#1
02-01-2014, 07:08 AM
 Gold Member Join Date: Jun 2012 Location: Reno, NV Posts: 536
How to figure range for up or down angles?

Over the last couple of years I have been slowly getting into long range shooting and hunting. So still trying to figure things out. My question is how do you figure for uphill and downhill angles when ranging targets? I use a Leica 1000 rangefinder and it does not compensate for angles.
#2
02-01-2014, 08:31 AM
 Gold Member Join Date: Aug 2009 Location: GA Posts: 515
Re: How to figure range for up or down angles?

Something like this:

ACI's & Mounts :: Angle Cosine Indicator "Mil Spec" Version (Water Proof) - Sniper Tools Design Co - Home of the Angle Cosine Indicator
http://www.eurooptic.com/nightforce-...FRAS7Aod7iMAbw

Then add a cosine chart, use a calculator (or your nugget), or modify your current card to find the horizontal range.
#3
02-01-2014, 08:35 AM
 Platinum Member Join Date: Jan 2008 Location: Northeast Posts: 3,614
Re: How to figure range for up or down angles?

There are a few different types of approaches that can be used.
-attach a cosine indicator to your rifle mount/scope and use a chart to determine the correction factor to your range or dope. Or, you can manully enter the output of your indicator into your hand held calculator to provide the corrected dope. At ranges under 500 yards I just took the value off the indicator and mentally reduced the range by doing the multiplication in my head. I'd recommend reading Brian Litz's book on Long Range Ballistics to understand the methodology.
-use hand held calculator(I like Shooter on my IPhone) that has the capability to determine the angle by placing it on your rifles scope turret when ready for the shot. You can then engage the devise to automatically provide the corrected dope. This is easy and fairly fast.
-Obtain a rangefinder that automatically outputs the corrected range or dope. This is the easiest and fastest approach. I currently use the G7 rangefinder.
Hope tis helps.
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#4
02-01-2014, 11:57 AM
 Gold Member Join Date: Jun 2013 Posts: 517
Re: How to figure range for up or down angles?

If you use an iPhone app, some of them will calculate the angle if you sight down the length of the phone. Then the app will automatically calculate the adjustment.
#5
02-01-2014, 12:32 PM
 Gold Member Join Date: Jun 2012 Location: Reno, NV Posts: 536
Re: How to figure range for up or down angles?

Thank you for the responses. I will look into them.
#6
02-10-2014, 11:12 PM
 Silver Member Join Date: Nov 2013 Posts: 156
Re: How to figure range for up or down angles?

Quote:
 Originally Posted by Greyfox There are a few different types of approaches that can be used. -attach a cosine indicator to your rifle mount/scope and use a chart to determine the correction factor to your range or dope. Or, you can manully enter the output of your indicator into your hand held calculator to provide the corrected dope. At ranges under 500 yards I just took the value off the indicator and mentally reduced the range by doing the multiplication in my head. I'd recommend reading Brian Litz's book on Long Range Ballistics to understand the methodology. -use hand held calculator(I like Shooter on my IPhone) that has the capability to determine the angle by placing it on your rifles scope turret when ready for the shot. You can then engage the devise to automatically provide the corrected dope. This is easy and fairly fast. -Obtain a rangefinder that automatically outputs the corrected range or dope. This is the easiest and fastest approach. I currently use the G7 rangefinder. Hope tis helps.
What is the name of that app? Can't seem to find it.
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#7
02-10-2014, 11:23 PM
 Gold Member Join Date: Jun 2012 Location: Reno, NV Posts: 536
Re: How to figure range for up or down angles?

The app that I found is called Shooter. It seems to work pretty good.

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