25 yard zero

rob b · Mar 3, 2018

Can a scope be zeroed in at 25 yards for the AR15 like iron sights

Also when you zero in iron sights at 25 yards are they done dead on at 25

gwchem · Mar 3, 2018

Huh? Zero means making it "dead on" at that distance. You should be able to zero a scope the same way as irons. It will then shoot slightly higher than your crosshair until somewhere between 200 and 300 yards.

rfawcs · Mar 3, 2018

Google "25 yard zero"

dreadpirate · Mar 3, 2018

For an AR at about 3000 fps, I use a 50 yard zero which allows about a 6" difference from 25 to 300 yards.
[EDIT] i.e. 3" high to 3" low at 300 yards.

Pale Ryder · Mar 3, 2018

You can do it at 10yds too, will give you a 50/200 yd zero.

http://jerkingthetrigger.com/2015/02/13/zeroing-target-50200-yard-zero-at-10-yards

dreadpirate · Mar 3, 2018

Or, look at it this way; if you use a 50 yard zero, then you will be ~1.2" low at 25 yards, dead on at 50 yards , ~1.5" high at 100 yards, ~.5" high at 200 yards.

HeatSeeker · Mar 3, 2018

dreadpirate said:
Or, look at it this way; if you use a 50 yard zero, then you will be ~1.2" low at 25 yards, dead on at 50 yards , ~1.5" high at 100 yards, ~.5" high at 200 yards.

This^^. I just zeroed in my red dot at 50 last week. Then was hitting a bit high at 100, but I'm good with that. It's an open site so I like zero @50 and I'll just compensate for the other distance if needed.

Biggfoot44 · Mar 3, 2018

You certainly * Can* zero scope at 25yds . The larger question is do you want to .

First question is mounting height. Is it co witnessed with your iron sights, or higher ?

Second question is , do you *want* both to be zero'ed the same ? Or do you have a different intended use for each sighting system ? Perhaps use irons for 0-200yds , and scope optimized for 300-500yds ?

( I'm also a fan of 50/200 zero , but that's a different discussion.)

Major03 · Mar 3, 2018

rob b said:
Also when you zero in iron sights at 25 yards are they done dead on at 25

Generally for a combat / battle sight zero (BZO) you adjust your sites for point of aim being point of zero. So yes dead on.

However you don’t have to do it this way. For example, many target shooters intentionally zero for point of aim being lower than point of zero so that they can more easily pick up their target (the old “pumpkin on a post” site picture). Benchrest shooters also will intentionally offset their point of aim to ensure that their site picture remains clean when shooting groups.

Schipperke · Mar 3, 2018

Are not AR sights calibrated in meters ?

rob b · Mar 4, 2018

A friend of mine has 2 uppers one with sights one flat top with a scope

He has a lane in woods behind his house but it is 32 yards deep and it's his the rest belongs to his neighbors
He has about 2 acres in a highly wooded area all farm and woods around

So he has the room for a 25 yard zero he asked me the questions I asked above

dreadpirate · Mar 4, 2018

Schipperke said:
Are not AR sights calibrated in meters ?

Yes - but ranges are not

The carry handle sights are calibrated for 3,4, 5, and 6 hundred meters. What range are you typically shooting at? I don't think it's going to matter for most shooters.

Since you asked; there's good info here on how to adjust carry handle sights so they work at closer ranges, and it is using a 50 yard zero, which most ranges have.

https://savannaharsenal.com/2017/04/08/how-to-zero-ar-15-a2-type-sights/

dreadpirate · Mar 4, 2018

rob b said:
So he has the room for a 25 yard zero he asked me the questions I asked above

If your objective is to zero the rifle but you only have 25 yards to work with, you can still zero the rifle for any range you want, you just have to know where at 25 yards the round should impact for that given zero. So for example, for a 50/220 yard zero, you will be about 3/4" low at 25 yards. [I picked an example based on a chart I found]

http://cdn0.thetruthaboutguns.com/wp-content/uploads/2012/08/bullet.jpg

rob b · Mar 4, 2018

Thanks again guys
We are going to zero in on Monday weather permitting

TheBert · Mar 4, 2018

Schipperke said:
Are not AR sights calibrated in meters ?

When I shot the M16A1 for qualification we shot yards, not meters. We BZO’ed at 25 yards and then shot the KD course at 200, 300 and 500 yards.

dreadpirate · Mar 5, 2018

TheBert said:
When I shot the M16A1 for qualification we shot yards, not meters. We BZO’ed at 25 yards and then shot the KD course at 200, 300 and 500 yards.

The Marine Corps still uses yards, forgot about that!

TheBert · Mar 5, 2018

dreadpirate said:
The Marine Corps still uses yards, forgot about that!

The last time I handled an M16A1 was in 1984.

dreadpirate · Mar 5, 2018

TheBert said:
The last time I handled an M16A1 was in 1984.

I think they still use yards.

NatBoh · Mar 5, 2018

San Diego Marine here. At Camp Pendleton we qualified at 200m, 300m, and 500m.

I was later stationed at Lejeune, where we qualified in yards.

25 yard zero

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