I just switched the upper receiver and hand guard on my 16" 5.56 and needed to do a quick re zero before heading to work. I shot a few times at 50yds to get a decent zero then shot twice at another target. Looked good so I decided to see how well the Larue QD would return to zero for me because I take the 1-4x off all the time when its in the house and not after hogs or coyotes. I took the scope off and re mounted it and shot once more. I didn't see the need to waste any more ammo after the third shot.
This is only for a short range AR. If I was trying to use this mount on something more precise I'd shoot more rounds into a group, at longer distances and remove and remount the scope multiple times.
Third shot was the bottom left hole and so far this gun has never shot that much better than the group in the picture but it doesn't need to. I was happy with how it turned out and figured it might help someone to post this.
Cheap 16" DTI 1x9 twist barrel with cheap 55 grain Hornady soft points
Next time I shoot at 100 I'll try this again, with at least five shot groups.
This is only for a short range AR. If I was trying to use this mount on something more precise I'd shoot more rounds into a group, at longer distances and remove and remount the scope multiple times.

Third shot was the bottom left hole and so far this gun has never shot that much better than the group in the picture but it doesn't need to. I was happy with how it turned out and figured it might help someone to post this.

Cheap 16" DTI 1x9 twist barrel with cheap 55 grain Hornady soft points
Next time I shoot at 100 I'll try this again, with at least five shot groups.