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AR 15 scope zero

This is a discussion on AR 15 scope zero within the M16 AR15 forums, part of the Rifle Forum category; Hey everyone I'm trying to figure out what the best way to zero my scope on my AR15. Also what is the best zero in ...


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Old December 10th, 2012, 09:15 AM   #1
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AR 15 scope zero

Hey everyone I'm trying to figure out what the best way to zero my scope on my AR15. Also what is the best zero in your opinion...I need to be able to hit repeatedly out to about 200 yards and I know there are several different distances recommend but what do you think would best suite my needs. Thanks in advance!

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Old December 10th, 2012, 09:23 AM   #2
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What kind of scope, magnification levels, etc?

I run a RDO (Aimpoint Micro T-1) and use a 100 yard zero.

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Old December 10th, 2012, 09:27 AM   #3
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zero at 200.

if it was a hunting rifle i'd say 250..

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Old December 10th, 2012, 10:25 AM   #4
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I zero my ARs at 50 yds which puts me back on at 200 yds.
Dave

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Old December 10th, 2012, 10:30 AM   #5
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Here's a government target for zeroing the M4 at 25 meters with the goal of hitting a man center mass at 300 meters:

http://ohmr.ohio.gov/forms/ohmr2444-b.pdf

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Old December 10th, 2012, 10:35 AM   #6
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If you need to shoot to 200, do a zero work up to a true 200 zero. But after it is zeroed do some real world testing to find out your true POI/POA with all ammo you plan on using. With the extreme height of the sights on the AR you need to know that with real world testing.

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Old December 10th, 2012, 10:55 AM   #7
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How high is the scope mounted above the bore axis? Is it the same height as the sights? Higher? Lower? That will make a difference on how you should zero.

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Old December 10th, 2012, 11:08 AM   #8
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I zero at 25m per the target Reacher mentioned. Gives you a +/- 2" out to 300. Since my ARs are not precision and the ammo I use ~minute of man, it's good enough for me

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Old December 10th, 2012, 11:19 AM   #9
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25m is military standard. That being said, if there is a specific distance you will be shooting, zero to it.

Zero it at 25m, and you'll be on paper when you go to 200m. Rezero it then, and you're good to go.

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Old December 10th, 2012, 12:44 PM   #10
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Hear it from the expert



This chart also helps me



Cheers

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Old December 10th, 2012, 12:47 PM   #11
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I've used Nikon's Spot on program and found it to be accurate. Allows you to play around with settings then verify on the range. Fun, too.

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Old December 10th, 2012, 01:25 PM   #12
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Just a suggestion, but would remove upper from lower, remove bolt/carrier, place upper on bags, steady rest and begin by bore sighting at let's say at 100yds. Line up bore/target/scope as near center as possible. Fire few rounds to see where bullet imact is on target and make finer adjustments from there. Once where you want it to be on target at 100, a 2moa adj. from 100 will put you very close on target at 200yds. For 300yds. come up 3moa which gives you a 5moa elevation total adjustment for 300yds. Now, not saying those are absolutely exact, but will put you paper and enable you to do the finer adjustments to bring you into the 10/X ring. Rule of thumb, 3moa/100yd increments out to 700yds. After that rule no longer applies. Again, just a suggestion.

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Old December 10th, 2012, 02:09 PM   #13
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Sorry just got back to the post.

The rifle is a Bushmaster E2S flattop so the scope doesn't sit all that high. I currently have a Bushnell 3x9 power scope. I'm trying to get the best possible zero for coyote hunting so I will not be shooting at a set known distance all the time I just need to be within an inch or two between 50 yrds and 200...which I know the .223 is capable of. Also I like using Hornady 55 grain v max.
http://m1280.photobucket.com/albumvi...l?o=0&newest=1

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Old December 10th, 2012, 02:33 PM   #14
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Check the documentation with your scope, that will tell you the intended zero range for that particular scope. Each scope is different, if it has tick marks for range indicators you need to pay attention to intended ammo type, barrel length, and zero range (ACOGs are like this). If it's a MILDOT or TMR, you should zero depending on the travel of the reticule (crosshairs) within the tube, that information would be available with including documentation.

With Minute of Man accuracy, I'd zero at 100 yards, since when hunting you'll be busting out the ol' Kentucky Windage, not adjusting your windage and elevation nobs. Besides, it's an AR, if you miss, you shoot again, and again. And then a couple more times for the hell of it.

The big thing you have to look out for is if you switch ammo, like 55gr to 62gr, you will absolutely need to re-zero, otherwise you will be up to 2 or 3 inches off of your previous zero at 100 yards.

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Old December 10th, 2012, 02:38 PM   #15
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Thanks for the info I appreciate it...still can't beat Kentucky windage! Any suggestions for predators/ AR specific scopes? I'm new to the coyote hunting scene.

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