Originally Posted by cyphertext

Good idea to go back to mechanical zero and start over...

Use this target to get you set up at 25m...
http://www.bobdbob.com/~deneb/doc/ta...rbine-zero.pdf

Ignore the directions about the elevation knob on your rear sight, as the Magpul rear sight adjusts for windage only.

Fire a group of three shots (or five), then adjust accordingly. The target will help show you how to move the sights.