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20 moa rail issues

 
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  #1  
Old 05-23-2014, 04:42 PM
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Join Date: Jan 2012
Posts: 40
20 moa rail issues

Hi All,

I am having an issue with my "Budget LRR' its an axis 308 with a 20 moa rail, cheap 10-40x50 scope that has 38 moa total up/down adjustment. Im using hand loads 150gn hornady btsp at 2860fps and the gun shoots 1.25 moa at 600 meters. The rail is an egw rail and the mounts are warne high, the gap from glass centre to barrel centre is 2", i know this is a little high but one day i intent on putting on a 56 or even 60mm scope so i will need them.

The issue is, After sighting in at 100 meters i only have 24 moa of up adjustment but need 27 to get to 800, i don't understand where my extra 20 moa went. If i use the hold over bars in the scope i need to shoot about 1/3 below the crosshairs to hit the 10" target.

In theory i should be struggling to sight in at 100m as i shouldnt have enough down. Any thoughts????
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  #2  
Old 05-23-2014, 05:33 PM
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Location: Idaho Falls, Idaho
Posts: 50
Re: 20 moa rail issues

Not to be rude but isthe rail on backwards? I only ask because that is something I would do. Haha
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  #3  
Old 05-23-2014, 06:21 PM
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Join Date: Mar 2014
Location: West Texas
Posts: 165
Re: 20 moa rail issues

38 moa total? Really? Sounds like the glass upgrade should be sooner rather than later. Give that B@rsK@ to someone you don't like and get something else
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  #4  
Old 05-23-2014, 06:37 PM
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Location: North Central Valley California
Posts: 358
Re: 20 moa rail issues

Did you bed the rail when you installed it? If the action isn't perfectly flat, front to back, it's easy to "tweak" the rail that much when you tighten in down.

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  #5  
Old 05-24-2014, 06:49 AM
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Join Date: Jan 2012
Posts: 40
Re: 20 moa rail issues

Thanks for the replies,

EMP, Im pretty sure its on correctly, higher to the back.

Mountain 56, with 38 travel i should be able to shoot 1200m using the 20 moa rail.

Fear no wind, I'd love to watch the video but when you have no choice but dial up speeds youtube is worst than useless, but still im nor sure how i could have tightened up and negated about 4mm of steel.
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  #6  
Old 05-24-2014, 07:22 AM
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Join Date: Dec 2008
Location: Great Falls, MT
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Re: 20 moa rail issues

Quote:
Originally Posted by FearNoWind View Post
Did you bed the rail when you installed it? If the action isn't perfectly flat, front to back, it's easy to "tweak" the rail that much when you tighten in down.

Gunsmithing Bedding A Scope Rail On a Remington 700 - YouTube
Excellent! Thanks for sharing.
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  #7  
Old 05-24-2014, 07:28 AM
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Re: 20 moa rail issues

Quote:
Originally Posted by theEMP View Post
Not to be rude but isthe rail on backwards? I only ask because that is something I would do. Haha
... and also make sure your rail is "not" 0 MOA.
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