Rifle Scopes NF Elevation Problem?

[mram10]

Took out my gun to test the ammo for dope and shot 6" high at 400 yds. I moved it 1 moa down and it grouped 2 inches low. Am I doing the math wrong or shouldn't 1 moa be 4" at 400?

Setup: Rem 700 300 Rum, 210 VLDs, 40f, 7000msl, not sure of pressure.

 

[bodywerks]

Re: NF Elevation Problem?

The first 5-10 coldbore shots of my savage rifles tend to shoot a couple MOA high. After that it stays consistent. Was your first group off a cold barrel? I highly doubt its the scope...

 

[sobrbiker883]

Re: NF Elevation Problem?

How many shots at each adjustment?

 

[mram10]

Re: NF Elevation Problem?

It was from a cold barrel and it was 3 shot groups. They were both about 2.5" groups.

 

[sobrbiker883]

Re: NF Elevation Problem?

1 moa is half the movement you experienced overall, and the other 4" is 1 moa at that distance.
I don't see any issue at all....

If you think ypu have problems see the Optics FAQ for how to check out a scope, but error within 1 moa can be a lot of things at 400yds, esp with a limited set of data to infer issues from.

 

[samnev]

Re: NF Elevation Problem?

If you weren't shooting a single cold bore group and that 2" low from 6" high repeated itself your change overall was 8" which is 2X what it should be at 400 yards if my math is right. 1 MOA change @ 400 yards should have left your group 2" high.

 

[mram10]

Re: NF Elevation Problem?

Santo,
That is my point. After I get back from elk hunting I am going to run the dot test and make sure it isn't just me. Has anyone ever heard of NF having 1/2 moa turrets on a scope?

 

[Timo Turl]

Re: NF Elevation Problem?

not sure what NF you are using but if you were on half the maximum mag then at 400-yrds that i believe the impact would be 8 inches. it would be 4 inches if you were on max magnification.

 

[mram10]

Re: NF Elevation Problem?

TJ,
I might be confused, but if I have it on 22x and I run the turret 4 "clicks" (aka 1 MOA) then shouldn't it always be 4" of adjustment no matter the mag? I could see if I was using the dots in the scope, but I was adjusting the turret.

 

[Timo Turl]

Re: NF Elevation Problem?

22x, 4 1/4 clicks or 1 MOA = 4" as you say.
11x, 4 1/4 clicks = 8"
16.5x 4 1/4 clicks = 6"

Are you sure it was on 22x ? Also, between shots did you walk down to the target or did you "range" the 6" above the target through your scope ?

 

[mram10]

Re: NF Elevation Problem?

TJ,
If you dial it in with the turret, it doesn't matter what power you have it on, right. I was not using the dots in the scope, but dial in my elevation, so your list is void in this instance. I walked down range and measured for myself to let the barrel cool.

 

[mram10]

Re: NF Elevation Problem?

TJ,
If you dial it in with the turret, it doesn't matter what power you have it on, right. I was not using the dots in the scope, but dial in my elevation, so your list is void in this instance. I walked down range and measured for myself to let the barrel cool.

 

[Timo Turl]

Re: NF Elevation Problem?

you have a 5.5-22x50 or 56 SFP right ? Possible they put in a FFP i guess but on SFP

http://www.snipershide.com/forum/ubbthreads.php?ubb=showflat&Number=939395#Post939395

 

[71firebird400]

Re: NF Elevation Problem?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: TJ.</div><div class="ubbcode-body">22x, 4 1/4 clicks or 1 MOA = 4" as you say.
11x, 4 1/4 clicks = 8"
16.5x 4 1/4 clicks = 6"

Are you sure it was on 22x ? Also, between shots did you walk down to the target or did you "range" the 6" above the target through your scope ? </div></div>

TJ, you have no idea how a scope works. Magnification is irrelevant when it comes to the turrets.

mram-

Run an actual tracking test (out to 40MOA if possible)at 100 yards before pondering this any further. For all we know, it was shooter error.

 

[saryan]

Re: NF Elevation Problem?

I have seen issues with NF's similar to this. What happens is when you adjust the turret it clicks but then when you shoot you don't see the movement you dialed. Then you shoot again and sometimes its fixed, sometimes it takes 2 or 3 shots to fix it.
How to fix it or make sure you don't have this problem. Take your nightforce and crank the turret to min and max elevation and do the same thing with your windage knob. Seems stupid but I have seen this on multiple NF scopes. Not sure if there is some sort of bur or rough edge in the machining that is causing it to hang up but either way this is a simple fix.
<span style="text-decoration: underline">Im not sure that this is your "problem"</span> but I would do this anyways just to trouble shoot the problem down and ensure I dont have this happen.

 

[mram10]

Re: NF Elevation Problem?

71Firebird,
What is this "shooter error" you speak of?

I will run a test on it to see what it does and let you know.

 

[samnev]

Re: NF Elevation Problem?

mram10,
Magnification should not make a difference. 1/4" @ 100 = 1/16" @ 25 yards when I zero my 8-32X56 NXS at low magnification (8X). Then when I move to 100 yards and switch to higher magnification it's 1/4" @ 100, 1/2" @ 200 yards etc, etc regardless of the magnification I use. If you have any doubts call NightForce CS they can varify it for you and tell you if you have a problem. They are always very helpful.
Good luck in resolving you problem, no pun intended.

 

[DP425]

Re: NF Elevation Problem?

Sounds like it moved 2x what you dialed on. So it's either tracking error or shooter error. That is of course, assuming everything else is consistent.


Double check you made the correct adjustments (shit happens, we all go stupid once in a while), verify consistency of shots (fire a 5-10 shot group), run a box test.

If you dicked up the adjustments- easy fix

If it's not staying consistent, look for mounting issues

If it fails box test, send it back to NF, you've got a tracking problem.

 

[mram10]

Re: NF Elevation Problem?

I will try the box test and make sure it wasn't me. I will keep you posted gentlemen. Thanks again.