Warning

 

Close
Confirm Action

Are you sure you wish to do this?

Cancel Confirm
AR15.COM
AR Sponsor
3/2/2017 6:34:00 PM EDT
I got a scope for my daughter's 10/22 and before I take her out to zero it, I want to make sure I'm explaining it right. The scope has 1/4" adjustments.

If, for example, we are shooting first at 25 yards and lets say it shoots 2" right. Am I correct is assuming this would be 8" right at 100 yards and therefore we would need 32 clicks to center? Normally I'd zero at 100 yards so just making sure I'm thinking right if zeroing at 25 yards. I'll probably move out to 50 yards for a final zero but want to make sure we are on paper at least. Thanks.
3/2/2017 6:36:08 PM EDT
[#1]
Am I correct is assuming this would be 8" right at 100 yards
View Quote


Yes.
3/2/2017 6:50:04 PM EDT
[#2]
Thanks, just seems like a lot of clicks but then maybe it won't be 2" off.
3/2/2017 9:24:18 PM EDT
[#3]
A faster way would be to line up on bullseye and then adjust your cross hairs to point of impact. Repeat until your zero at 25 . that will put you on paper at 5o or even 100 Repeat and rinse at 100
3/2/2017 9:40:37 PM EDT
[#4]
Seems like a lot, but that's the math.

This is what I do:
1) center your scope unless is new in which case it should be centered. The owners manual should tell you how to do that, but it basically involves turning the dial all the way to stop, then all the way the other direction counting the clicks, then back the other direction 1/2 that number. Both windage and elevation.
2) make sure it is mounted level on the rifle.
--you could take it to the range that way and probably be within a few inches on paper. Or:
3) bore site it. That is, aiming from a secure platform take the bolt out and look through the barrel at a mark at least 10 yards away. I use my bench vice and look at a target pastie on my wood fence which is 18 yard away. Dial that in so the match.

You'll be very close.
3/2/2017 10:13:15 PM EDT
[#5]
It is a lot of clicks for 2 inches, but as you said, that translates into 8 inches at 100 yards.
3/2/2017 10:38:22 PM EDT
[#6]
Quoted:
I got a scope for my daughter's 10/22 and before I take her out to zero it, I want to make sure I'm explaining it right. The scope has 1/4" adjustments.

If, for example, we are shooting first at 25 yards and lets say it shoots 2" right. Am I correct is assuming this would be 8" right at 100 yards and therefore we would need 32 clicks to center? Normally I'd zero at 100 yards so just making sure I'm thinking right if zeroing at 25 yards. I'll probably move out to 50 yards for a final zero but want to make sure we are on paper at least. Thanks.
View Quote


I bet she'll like that. What scope? Standard mount, Picatinny, other?
3/2/2017 11:36:11 PM EDT
[#7]
You probably know this but maybe someone doesn't
Two-Shot Sight-In: How to Zero a Rifle in Two Shots - Rifle Tip
3/3/2017 1:21:03 AM EDT
[#8]
Thanks for the replies. I know about the two shot site in process but it depends on a stable lead sled or similar which I don't have. Besides, I want to teach her the process and how scopes work (something I'm no expert on and also learning).

Quote History
Quoted:


I bet she'll like that. What scope? Standard mount, Picatinny, other?
View Quote

It's a vortex diamondback hp 2-8x. I used the included weaver rail and some basic rings. I think it's more scope than necessary but I got it for a good price and I could use it other rifles as well depending on need.
3/4/2017 2:47:01 AM EDT
[#9]
Quote History
Quoted:
A faster way would be to line up on bullseye and then adjust your cross hairs to point of impact. Repeat until your zero at 25 . that will put you on paper at 5o or even 100 Repeat and rinse at 100
View Quote


At the outset, and before doing the above, I find it better to mechanically zero a scope using the 'mirror trick'.  That seems to work very well in getting one on paper without bore sighting or counting clicks from one side to the other.

Then do the above cross-hair trick if your platform is totally stable or you have an assistant manipulate the turrets while you hold the rifle steady on the bullseye, or adjust clicks based on where your POI needs to go to hit the bullseye.
3/4/2017 7:35:20 PM EDT
[#10]
What's the mirror trick?

I zeroed my 3x9 on my 18" AR last night by using a boresight at approximately 10 yrds indoors and aligning crosshairs 2" above the laser. When I went to the range today that was good enough to get me on paper at 100 yds. I used a target with an MOA grid and made the necessary adjustments. Then I shot a 3 rd group for confirmation. Worked pretty good although I need to confirm next time out because it was windy today.
3/4/2017 7:44:05 PM EDT
[#11]
Quote History
Quoted:
You probably know this but maybe someone doesn't
https://www.youtube.com/watch?v=TiOpQY2ORo4
View Quote

Thats a good trick for a quick and dirty zero but if you move the rifle at all doing the process it won't come out correct. If you repeat this process 5 to 10 times you get a much better outcome.
3/4/2017 11:53:34 PM EDT
[#12]
Quote History
Quoted:
What's the mirror trick?
View Quote
Hold a mirror on the objective end of the scope and look through it. If you see two cross hairs, turn the turrets until they align on top of each other and you see only one. That will recenter your scope. It's also helpful to know how starting out with a scope adjusted far to one extreme or the other affects the adjustments available.

See here Item 3 and study the illustrations to understand this
3/5/2017 12:49:48 AM EDT
[#13]
Personally I like sending a bunch of rounds downrange and turning the knobs till the bullets go where I want.
3/6/2017 12:25:36 AM EDT
[#14]
Quote History
Quoted:
What's the mirror trick?
View Quote


I never need to take the time to boresight.  Besides, it's recommended at distance of at least 25 yards.

In any event, the mirror method has worked fine for me.  

Here is a video.  You can skip to 1:56 and learn about the mirror method of scope-centering:

Mirror method

Probably best to do it as in the video, but I've used it at home against a bathroom mirror, medicine chest mirror, mirror on a sliding closet door, etc.  Out at the range during daylight hours I have centered the scope by using a side mirror located on the vehicle exterior.

It's likely that with most new scopes they come already centered, or nearly so.  You can confirm by merely checking that out using the mirror trick and, if necessary, make required adjustments.
AR Sponsor