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Long Range Issues with gun/scope

yooper time

Private
Full Member
Minuteman
Mar 7, 2011
7
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43
Hillsboro, OR
Hi Guys and gals,

I have a Colt HBAR match target 20" with a 3-9-40 Leupold Mark AR. I ran it out to 500 yesterday and ran out of vertical adjustment. Would utilizing lower rings bring me more adjustment or should I go with lower rings and a 10 or 20 MOA riser? I am currently running with Burris Extreme Tactical Xtra High Mounts to make the charging handle easier to access.

Thanks for any/all input!

Tom
 
Re: Long Range Issues with gun/scope

I'd look toward a mount like the LaRue SPR mount. I believe they have some cant to allow for more vertical adjustment up from your zero.
 
Re: Long Range Issues with gun/scope

Lower rings are not going to help you. You are going to have to get some sort of canted base to get more useable adjustment from your scope.
 
Re: Long Range Issues with gun/scope

If you're running out of elevation adjustment at 500 yd, you may want to go with a 10 MOA or 20 MOA canted mount, depending on how far out you want to go. Here are a couple examples of canted Unimount-style bases you could go with:

These are LaRue QD mounts, 10 MOA and 20 MOA cant, respectively. Both are sufficient height for use on an AR with a monolithic upper.

http://www.laruetactical.com/larue-tactical-spr-s-mount-lt-158

http://www.laruetactical.com/larue-tactical-20-moa-psr-scope-mount-qd

This is a Nightforce Unimount with 20 MOA cant, it may not be tall enough for your AR.

http://nightforceoptics.com/RINGS__BASES___MOUNTS/rings-_bases_-_mounts.html

I'm sure there are other examples from various companies. If you go this route, you want to be sure you get a mount that is tall enough for your scope to clear, I'm guessing in the neighborhood of at least 1.3"-1.4" minimum. You can measure to determine the minimum height, but remember you'll need a tick more due to the cant. Good luck with it.