Just got mine sighted in. Have not had a chance to shoot at 40 yet. I'm using the factory choke and federal heavyweight TSS #9.
(http://i79.photobucket.com/albums/j137/joshsmallwood1/97FDBBB1-4860-4D92-B11F-DFE45A809C46.jpg) (http://s79.photobucket.com/user/joshsmallwood1/media/97FDBBB1-4860-4D92-B11F-DFE45A809C46.jpg.html)
Looks solid!
With bead? Or optic?
Is yours really high off the gun using the factory rail? I want the same sight on mine but I figured it would sit weird on top. I like my optics lower usually. Also do you use a protector on yours?