I see your point about the padding in a truck, however in regards to that particular issue, I've always felt it necessary with any scoped rifle to either have it secured in a padded case, or held in a passengers hands. Specifically not letting the scope rest against any part of the truck for any length of time, as I grew up being taught that the constant vibrations from the truck were especially hard on scope zeros. As far as the drop onto the pad goes, the physics of what goes into that type of strike is beyond my pay grade... and you would certainly be better at assessing that. However anecdotally, I feel that when I make contact with a hard surface, say my bare foot onto a padded floor, I feel more "pain" or impact than if my foot had a shoe on it with the padding affixed to my foot. Likenwise, ive heard stories of engineering student competitions where they devise padding around raw eggs to drop them from various heights to see if they can keep them intact. The same egg dropped from 3ft onto a padded floor might break, whereas if it were wrapped in padding instead, it might not break from the same height. Not sure if that correlates here, just curious if there would be something to the idea.
But to your other point;
Can you list out again the scopes you have found to pass your tests? At least the ones at 30oz or less... If I've read you correctly before, you've cleared all of the NF optics, including shv line. SWFA scopes i believe ??? S&b? Any of the leupolds? Any of the vortex, swaros, etc? Anything known for being particularly lightweight... like the z5, or the vx lines??