varsity07840
07-09-2011, 09:24 AM
Is there a rule of thumb or formula for determining how much to move a rear sight for windage? I'm off 2 1/2" @ 50 YDS.
Duane
mikea
07-10-2011, 11:45 PM
The formula for sight movement for both windage and elevation is:
(sight radius x distance on target) / distance to target - all in inches
The sight radius is the distance between the front and rear sights (the back of each - what your eye sees)
In your case the distance on target is 2 1/2 " and the distance to target is 50 x 36 = 1800 "
An example if, say, your sight radius is 32 ": (32 X 2.5) / 1800 = .044 "
Hope this helps.
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