My M40a1 is scheduled for delivery tomorrow. So I got the Unertl 10x out of the safe for mounting and started reading the zeroing instructions from Unertl as posted on the Hide a few years ago. They say to calc the amount of adjustment needed, and adjust the large Allen screw in the center of the turret but don't say anything about click values or turn values. They do caution against over adjustments and not needing more than 1 half to 1 full turn. Any idea? I suppose trial and error will eventually get it done but seems like a waste of barrel and ammo.
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Unertl zero
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Pull the bolt and boresight the thing at 25 yards and that will put you on paper at 100 if you're not good enough to just boresight at 100.
It has been a while since I did this, but I do remember that small adjustments made pretty big changes.
DW
DW
The fine tune is +/- 3 MOA, some discussion and blurry but usable pics of the manual and the backside of the spanner wrench available here:
Setting up your new MST-100s - M40rifle.com
There are many ways to skin this cat, especially in adjusting parallax and zeroing, but the order of operations should stay the same (1), 2), 3)...). These
www.m40rifle.com
A reprint of the manual is listed for sale here:
