I have a Blaser R8 416 rem mag with Burris fast fire on std blaser quick detach mounts, only clips into one hole of the 2 you would use for a conventional scope and its never gone out of centre. plus I remove it every time I pack my weapon up and take apart to fit in the case
been my go to gun for backup for 7 years now
never had an issue, only replaced the battery once
