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3X9 Vortex problem on AR15

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/04/2014 at 19:25
desmo900 View Drop Down
Optics GrassHopper
Optics GrassHopper


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I mounted my new Vortex Diamondback 3x9/40 on my AR15 in 6.5 Grendel that previously had a Burris AR-332.  Trying to sight it in at 50yds, the scope needed ALL of the turrets elevation to get me 1/2" below the center of the target. 
I used the SWFA S.S.A.L.T mount and every thing bolted up just fine.   I'm a noob with optics so i'm hoping you guys have some ideas as to what went wrong.

Thanks for your help
Desmo
 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/04/2014 at 23:07
Sparky View Drop Down
Optics Master Extraordinaire
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Did you use a torque wrench to tighten the rings? And if so how tight did you tighten them?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/05/2014 at 02:19
desmo900 View Drop Down
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I used a Fat Wrench on the rings 15in/lbs in a X pattern and then again at 30in/lb
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/05/2014 at 08:51
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Can you post a picture of the setup?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/05/2014 at 09:05
supertool73 View Drop Down
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It also may just be because it is 50 yards.  Theoretically that scope should be okay to do that with as it has 70 MOA of adjustment, but you are having to overcome quite a gap between the scope and the centerline of the bore.  The closer you sight it in the more of that gap the scope adjustment has to overcome.  If you went out to 100 yards, it would probably be okay, but then you would have to learn to compensate for the closer in shots by holding a bit high.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/05/2014 at 15:47
Sparky View Drop Down
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FYI

SWFA SSALT
http://www.opticstalk.com/forum_posts.asp?TID=18199&PN=2
(As per Chris Farris II's post, second page, first post)
base to rail: 40in/lbs
ring halves: 18 in/lbs
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/10/2014 at 19:10
desmo900 View Drop Down
Optics GrassHopper
Optics GrassHopper


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i found the the problem with my scope.  The bracket that holds my brass catcher was putting a small amount of pressure on the scope base, I trimmed it back to allow some clearance.

Thank you for all of the advice.  


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