Rifle Scopes XTR II woes.

[Halfnutz]

I bought a XTR II 5x25x50 SCR mil/mil thinking it was gonna be a great match on a 6.5 creedmore UUK.
Mounted it in a LT-111, set the windage at mechanical zero and set the knob at the center mark. Sighting in I used every bit of left windage and am still not on center. Emailed Burris....their response is buy our rings. Opened a support claim on their website, again buy our rings. Called, they want you to leave a message and they'll get back in 24 to 48 hours. Not happy with Burris CS.
I've checked the mount, checked with LaRue, took it off put it back on same problem.
What's it take to get return authorization from Burris?

 

[fdkay]

The problem with quick detach scope mounts is this: How do you verify that you have the same torque on the front as you do on the back?
Have you tried the same set up with a known, good scope?
What do you mean, set the windage at mechanical zero? It came from the factory at mechanical zero.
There MAY be some user error here.
It may be a bad scope.
It may be a bad mounting system.
It may be tolerance stacking.
I'm not familiar with a UUK rifle, so I can't help you there.
Why did you choose to go with a QD mount? They are not the type of mount one would normally put on a precision rifle meant for long range.

 

[richthe1]

I bought a XTR II 5x25x50 SCR mil/mil thinking it was gonna be a great match on a 6.5 creedmore UUK.
Mounted it in a LT-111, set the windage at mechanical zero and set the knob at the center mark. Sighting in I used every bit of left windage and am still not on center. Emailed Burris....their response is buy our rings. Opened a support claim on their website, again buy our rings. Called, they want you to leave a message and they'll get back in 24 to 48 hours. Not happy with Burris CS.
I've checked the mount, checked with LaRue, took it off put it back on same problem.
What's it take to get return authorization from Burris?

My first post on Sniper’s Hide, so hopefully I’m doing this right. Did you set the Windage at mechanical zero THEN try to sight it in? I have an XTR II and had a similar issue. What happened to me was when I thought I set the zero for windage I lost a ton of windage adjustment. Turns out I did it incorrectly. When I looked back at the manual on page 4 it says:

“NOTE: Windage adjustments are made with a multi-directional adjustment knob. Zero is set WITH AN INDEXING MARK (emphasis mine) to allow for left and right adjustments. Failure to zero at the index may result in limited windage adjustment.”

You know how when you set the elevation turret you have to push the turret all the way down? Well, turns out when you set the windage you aren’t supposed to push all the way down, otherwise you lose adjustment. You have to set it just above that first index line (look at page 4 of the manual for photo of “Proper Windage Zero”).

Does that help at all?

EDIT: How much was “every bit of left windage”?

 

[pell1203]

I bought a XTR II 5x25x50 SCR mil/mil thinking it was gonna be a great match on a 6.5 creedmore UUK.
Mounted it in a LT-111, set the windage at mechanical zero and set the knob at the center mark. Sighting in I used every bit of left windage and am still not on center. Emailed Burris....their response is buy our rings. Opened a support claim on their website, again buy our rings. Called, they want you to leave a message and they'll get back in 24 to 48 hours. Not happy with Burris CS.
I've checked the mount, checked with LaRue, took it off put it back on same problem.
What's it take to get return authorization from Burris?

Not familiar with what UUK is, but is this the first time a scope has been mounted on this rifle?

If so, your receiver rail mount holes may not be aligned properly thereby causing the rail to be misaligned when mounted by such amount as to consume most or exceed all of your available windage correction. Standard rings and mounts would typically not be able to overcome this problem... the Burris Signature rings are designed to allow purposeful realignment to correct these kinds of alignment inconsistencies.

In short, check your rail alignment, the Burris scope may not be your problem!

 

[Blackedout12v]

Not really sure the mechanical zero would matter if he used every bit of left windage? Definitely sounds like something may be amiss. Would be worth trying another scope to see if it changes anything, quick and easy. If you have another scope readily available. Anyways hope you find a solution as painlessly as possible.

 

[Halfnutz]

The problem with quick detach scope mounts is this: How do you verify that you have the same torque on the front as you do on the back?
Have you tried the same set up with a known, good scope?
What do you mean, set the windage at mechanical zero? It came from the factory at mechanical zero.
There MAY be some user error here.
It may be a bad scope.
It may be a bad mounting system.
It may be tolerance stacking.
I'm not familiar with a UUK rifle, so I can't help you there.
Why did you choose to go with a QD mount? They are not the type of mount one would normally put on a precision rifle meant for long range.

UUK= LaRue Ultimate Upper Kit. .308 AR platform, chambered in 6.5CM. It's a flat top reciever, the rail is machined as part of the receiver.
It's a LaRue LT111 mount, I don't think it's a mount issue.
The scope came new and the windage turret was turned all the way to the housing (zero stop).
I loosened the set screws and moved the turret out to the index mark as the instructions said. It still would not adjust left at all.
I turned the knob all the way out which allowed about 15 mils of total adjustment. Turned it back in 7.5 mils. The turret is set up for 10mils per revolution, leaving about a 5 mil window for zeroing.
A laser bore sight showed the windage way off as well. The laser is new and honestly I didn't trust it... until I went to the range. POI was way right at 50 yards. At 100 yards it is out of travel and POI is about 1 inch right of the POA.
My next step is to unmount it and put it in a v block set up with the adjustment centered. As its rotated, if the cross hairs vary off of center it should prove that the scope is the issue.
My grinding wheel balancer at work should do the trick nicely.

Then I just have to cope with Burris.

 

[Halfnutz]

I have not tried another scope yet. I'll have to unmount it from another rifle or get another set of rings for the extra scope I have.

 

[Halfnutz]

Right now it's all show and no go. I was able to hold off and easily ring a 6 plate at 200 and a silhouette at 300. I really wanted to stretch it's legs soon.

 

[Apnea]

Any chance the QD mount could be crooked? If you bore sight at a distant object and then look over the screws on one side of the rings, do they line up with the object?

I see that the front of the mount extends over the front rail of the rifle instead of just clamping on the receiver. Thinking aloud here since the whole thing is a new system....

 

[Halfnutz]

My first post on Sniper’s Hide, so hopefully I’m doing this right. Did you set the Windage at mechanical zero THEN try to sight it in? I have an XTR II and had a similar issue. What happened to me was when I thought I set the zero for windage I lost a ton of windage adjustment. Turns out I did it incorrectly. When I looked back at the manual on page 4 it says:

“NOTE: Windage adjustments are made with a multi-directional adjustment knob. Zero is set WITH AN INDEXING MARK (emphasis mine) to allow for left and right adjustments. Failure to zero at the index may result in limited windage adjustment.”

You know how when you set the elevation turret you have to push the turret all the way down? Well, turns out when you set the windage you aren’t supposed to push all the way down, otherwise you lose adjustment. You have to set it just above that first index line (look at page 4 of the manual for photo of “Proper Windage Zero”).

Does that help at all?

EDIT: How much was “every bit of left windage”?

We're on the same page. Thanks for the reply and welcome.
I took the knob clear off at one point, it still won't turn left any farther.

 

[Halfnutz]

Any chance the QD mount could be crooked? If you bore sight at a distant object and then look over the screws on one side of the rings, do they line up with the object?

I see that the front of the mount extends over the front rail of the rifle instead of just clamping on the receiver. Thinking aloud here since the whole thing is a new system....

If it's the mount, I'd be relieved, LaRue at least answers the phone and hasn't tried to up sale me another product. I called them and explained the problem, even asked if they had ever had quality issues with the mount. I unmounted it and put it back on and still way right and same POI, so I don't think it was an instalation error.

 

[pell1203]

Another observation... hard to tell from the pictures but confirm your mount is only engaging the rail portion on top of the receiver and does not bridge or make contact across the gap between the receiver rail and handguard rail. You do not want to mount across this interface as they will never be in perfect alignment and move independently of each other when flexing (as in when firing).

It appears from your picture the front lug/portion of scope mount may be beyond the front edge of the receiver rail. If this is true, then this may very well be your issue.

Just something else to check.
Edited to add: Just saw Apnea had already suggested this!

 

[pell1203]

Halnutz, try moving the scope back one set of lugs on the rail and recheck your alignment. If it improves, then you can loosen the scope mount rings and slide the scope just a bit forward to maintain the same eye relief.

 

[Halfnutz]

Halnutz, try moving the scope back one set of lugs on the rail and recheck your alignment. If it improves, then you can loosen the scope mount rings and slide the scope just a bit forward to maintain the same eye relief.

I'll double check it tomorrow. Good call. It's worth looking into.

 

[GeoffatBurris]

I work at Burris, but in marketing not tech support. You've got a lifetime warranty, and if you want to return that scope, you can absolutely return it. You can set up an RMA yourself anytime at:
https://burris.supportsync.com/

But indulge me for a second here:
The customer support team isn't really trying to sell you another product. They're trying, in a round-about diplomatic way, to say that the scope is not defective. You've got alignment issues somewhere. The scope has 55MOA of windage, or ~27 inches at 100 yards. So if you're maxing it out, you're off by more than two feet.

We think that you, as rickthe1 pointed out, most likely put tthe turret cap back on incorrectly. Or something is wildly out-of-whack between the scope, the mount and the rail.

But again, if you think it's the scope, please just send it to us. The link above helps us a great deal as we get your information in a support ticket and have address and everything correct from the start.

If you want to discuss it further with an actually qualified tech support person, I can make that happen. Send me email (NOT a message on this board, please), and I'll get it to the right person. [email protected]

-geoff

 

[Halfnutz]

I work at Burris, but in marketing not tech support. You've got a lifetime warranty, and if you want to return that scope, you can absolutely return it. You can set up an RMA yourself anytime at:
https://burris.supportsync.com/

But indulge me for a second here:
The customer support team isn't really trying to sell you another product. They're trying, in a round-about diplomatic way, to say that the scope is not defective. You've got alignment issues somewhere. The scope has 55MOA of windage, or ~27 inches at 100 yards. So if you're maxing it out, you're off by more than two feet.

We think that you, as rickthe1 pointed out, most likely put tthe turret cap back on incorrectly. Or something is wildly out-of-whack between the scope, the mount and the rail.

But again, if you think it's the scope, please just send it to us. The link above helps us a great deal as we get your information in a support ticket and have address and everything correct from the start.

If you want to discuss it further with an actually qualified tech support person, I can make that happen. Send me email (NOT a message on this board, please), and I'll get it to the right person. [email protected]

-geoff

Thanks for the reply. I'm checking some more things out like the mount position.
I am positive I am setting thee knob correctly. I had no problem with elevation and I undrstand the witness mark on the windage housing. The knob is definately not bottomed out, but it won't turn any more. I moved the mount back to ensure the hand gaurd portion isnt influencing the issue. I'm travelling for work in a few days so it'll be a bit before I can verify anything at the range.
But again, really thank you for your reply. I'll check everything I can, and if it's on me I will follow up on here to make sure te forum knows where the problem lies and hopefully someone else can learn from it.

 

[solipsism]

If it’s not the mount position, wouldn’t you be able to reverse the mount and try it? If it’s the mount it should be way right then.