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Old February 28, 2010, 04:24 PM   #1
dejswa
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Maximum windage error on new rifle?

I recently purchased a new .22 cal rifle which has an 11 mm rail for scope mount. In setting up my scope, I decided to sight it in at 44 ft (arbitrary, but happens to be where the target is).

I am using a Burris 4.5-14x32 timberline scope and 1" x 11mm base high rings to get over the iron sights. I notice that the initial windage error seems excessive. I have placed the scope's windage and elevation adjustment knobs at their center positions, noting that there are 6.5 turns full scale on these knobs.

The initial error is 2.25" at 44 ft which calculates to about .24 degrees or 14.6 MOA. The scope cannot quite correct for this degree of error. It's specs say it does 30 MOA which would be +/- 15 MOA. And I wouldn't want to use all my windage just to center the shot with no wind anyway. The elevation is out of range as well but I suppose I can shim that.

I did put about 30 mil of 5 mil aluminum shim into the rear loop (where you are not supposed to shim) and I can get it back on target with some turns on the windage. I am afraid this will damage my scope, though.

I could split the shim between the front and rear loop, I suppose.

Should I sent the rifle back?

If not, how should I adjust? I do note that there are some windage adjustable rings available. The first one is Weaver, so I would first have to add a Weaver conversion plate to the 11mm:

http://www.opticsplanet.net/millett-...yle-rings.html

and these, which allow for gross adjustment for both windage and elevation:

http://www.tactical-store.com/ts-be-mt-10101.html

Thanks for reading!

Last edited by dejswa; February 28, 2010 at 04:30 PM.
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Old February 28, 2010, 06:03 PM   #2
Doc Hoy
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Out of my element here.

DEJSWA,

Before taking the rifle back why not try the accuracy with the iron sights.

That way you will know if it is the rifle or the scope/scope mounts.
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Old February 28, 2010, 07:33 PM   #3
dejswa
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The iron sights are perfect!

The 11mm rail has two screws that hold it to the gun. Seems like the screw holes are just off by a bit.
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Old February 28, 2010, 08:32 PM   #4
highvel
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I would expect the manufacturer could send a new rail easy enough and be done with it!
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Old February 28, 2010, 09:55 PM   #5
dejswa
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Yes, but don't know if it is the rail or the mounting.
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Old March 1, 2010, 05:58 AM   #6
Doc Hoy
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DEJSWA

Are you in a position to carry the rifle back to the seller and explain the problem, examine it with him/her and get a commitment to make it right?

If the rail came with the rifle, it should not matter what is wrong. The seller should service your needs.

Hope you have this option.
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