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Leupold Mk4

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: August/17/2009 at 23:20
badshooter View Drop Down
Optics GrassHopper
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Joined: August/10/2006
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I recently got a Mk4 3.5-10 with the M3 turret. I have read that I'm not to put it on a 20MOA base, but I already hade the bse installed.  I got my rifle zeroed at 100yds and it still has all the movement to 1000yds, I guess, I don't have 1000yds to check it with. 
Why is it that this scope shouldn't be mounted on a 20MOA base. The rifle is a SPS-T in .308.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: August/18/2009 at 07:03
Mike McDonald View Drop Down
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That modelhas about 55 moa elevation travel, and with some base/ring combinations when using a 100 yard zero there may not be enough remaining elevation travel to go to 1000yards.
For a 308 win that should be from 33 to 43 moa depending on the rifle and ammunition.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: August/18/2009 at 09:42
badshooter View Drop Down
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Joined: August/10/2006
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I bought this scope used, and it was set with the turret almost all the way up. I only had about 3/4 turn before it ran out of adjustment.  I boresighted it and lowered the dial about 1 full turn. I figured with a 20MOA base, I shouldn't be able to use the whole 1000yd adjustment.
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