Like many subjects, part of the confusion out there comes from a combination of lack of understanding of the science, “old wives’ tales” and contradictory information.
Let me give you the actual facts that are not open to dispute or opinion then those facts can be applied to the individual situation.
As stated by “AIAW”, “Torque” is a power measurement of work in a rotational force that has nothing to do (no direct line whatsoever) between “torque” and tension (clamping force). Also, up to 90% and possibly more can be consumed by friction rather then fastener elongation. (go to boltscience.com and read up)
To make it even more confusing the” clamping force” required by a fastener to even reach minimum tension is a relationship is dependent on the metals used for both the fastener thread and the parent thread. If you exceed the weaker then you start plastic deformation and stripping- if you go to the stronger then you risk damaging a component in the joint (think overtightening a gasket and cutting it)
We have this data on “graded” fasteners (SAE, ASME, ISO etc.) but not on unrated fasteners (which gun screws fall under) such as common hardware grades. That means there is no uniformity whatsoever in metal selection, tempering process (if any) for the fastener or parent material.
That being true then there cannot be any uniform “torqueing” tensioning standard across the optics world because there are too many possible variables.
Technically (in blind holes specifically) when that drop of blue gets in there, you risk false torque tension due to hydraulics.
Also, if the screws are too soft relative to the parent thread then heavy torqueing tensioning will deform the threads and lessen clamping force and it will shoot loose.
Fit class is another consideration when one is wanting a precise and uniform fit but too large to cover in a standard post.
I’ll be the FIRST one to tell anyone about the criticality of PROPER AND EQUAL tension between fasteners in every application (scopes, shaft alignment, flange fit, critical bearing tolerances etc.) because a large part of my career involves fixing things where that guidance wasn’t followed.
That being said, given the unknown grade, metallurgy et al of a set of rings and soft machine screws, my “personal and professional” RECOMMENDATION is to tighten uniformly (wrist or wrench) until the optic is SNUG and stop. (erring on the side of caution) Maybe even a drop of Loctite on the scope tube and lower mount for good measure.
Regarding wet V. dry torque- from a tension perspective there is zero difference because tension has nothing to do with tribology. It can make a difference with the friction using “torque” which is what makes it unreliable when clamping force is required. That said, the anti-galling assistance a wet thread has over a dry one is what keeps me in the lube the thread camp. But ASME and SAE will tell you that’s a major factor in the coating selection on the fastener to determine if wet or dry is recommended. ( just always be mindful of that hydraulically induced false torque)
Trust someone who does critical alignments for a living, a little variance between tension on scope mounts/screws isn’t going to deform or affect anything (assuming proper leveling and axis alignment). Properly snugged with good threads and clean are not going to shoot loose often if ever.
Even if they did I would rather repeat the tensioning operation that possibly induce fatigue, bend or other deformity which might be permanent but that’s just my personal preference.
This applies generally to any fastener in any application excluding special circumstances.
I prefer to not lube screws when mounting ring screws, and would never torque anything down if there was inconsistency in screws having / not having any lupe / oil. But thx for mention is 
