I missed this way-back-when, sorry about the late response!
I've done a bunch of shooting with that PEQ, on my -M in 7.62 NATO. The IR laser on that little unit lit up steel siloughettes at 600 amazingly well, I could tell I was on the steel by the 'splatter' of reflection coming off it. It's close enough to the bore axis that I don't need to 'favor' all that much until I get out past 600. At 900 I was missing the target due to the difference in angle.... I can correct for it, but it's a "let me add in some windage" versus "point and shoot", if that makes sense.