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12/20/2004 7:44:02 PM EDT
Hi all, still trying to learn my new AR.  OK, I fudged up my original Olympic 16" has been modified with a used 20" A2 upper.  At 25 yards, I am hitting about 2-3 inches above point of aim with the rear sight bottomed out.  This past weekend I was at an outdoor range with steel silloutes at 200m.  I was having to aim basically at the crotch of the target to get hits, still with the rear sight bottommed out.  Does any know how much one click of the front sight actually changes point of impact?  And I am thinking raise the front sight to lower point of impact?  Any input would  be appreciated...
12/20/2004 7:52:41 PM EDT
[#1]
LOWER the front site to flush or a notch or so lower thatn flush..

Then ----- Work with the rear sight.
12/20/2004 7:58:39 PM EDT
[#2]
Quoted:
Hi all, still trying to learn my new AR.  OK, I fudged up my original Olympic 16" has been modified with a used 20" A2 upper.  At 25 yards, I am hitting about 2-3 inches above point of aim with the rear sight bottomed out.  This past weekend I was at an outdoor range with steel silloutes at 200m.  I was having to aim basically at the crotch of the target to get hits, still with the rear sight bottommed out.  Does any know how much one click of the front sight actually changes point of impact?  And I am thinking raise the front sight to lower point of impact?  Any input would  be appreciated...


Obviously, if the rear sight is bottomed out, you need to adjust the front sight.  Make it higher.  I bet about 4 clicks to start, if it is a 4 notch front sight.  Not that I have just sighted in three rifles this week, unlike the other poster.  Or jerk the trigger harder.
12/20/2004 8:06:25 PM EDT
[#3]
Okay.  You've got a 20" barrel and an A2 upper.  Set your rear to the 8/3 position (the rear sight should be nearly bottomed out).  Set the front sight so that the base is flush with the shelf on the front sight base.  Shoot at 50 yards, using the LARGE aperture.  Yes, it's big and hard to zero with, but use it anyway.

Adjust the front sight to correct for elevation.  To lower your point of impact, the front sight must be raised.  Adjust the front sight (only) until proper elevation has been achieved.  Post results.

-Troy
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