I built a Surgeon actioned rifle for Match shooting so no mounts to move and I tend to use Rugers for hunting and I don't ride quads. I have seen 8X40 screws break too. M24 running a MIRS rail and NightForce with a lot PVS-26 time.
Even if you hadn't read the book you had thought about the potential weak points in the optic/mounting system and worked to eliminate them and arrived at the same conclusion he did.
On a side note I did see a brand new out the box and mounted that same morning H-58 3-15 NXS F1 take a dump. We took it off the rifle and you could hear something rattle inside. The reticle couldn't be brought into focus. Not sure what turned out to be wrong with it.
