Another question after the fact LOL
Anyone have any luck with one of these? I know there are other free and wonderful methods, just trying to save time I guess.
https://www.amazon.com/dp/B004TAB7ZO/ref=cm_sw_em_r_mt_dp_T-LDFbT32HSB5
the only short coming i see is if you don't have a starting point, a flat spot on the gun
i guess you could mount a ring bottom for that point to start or assume your dovetail to weaver mount is sitting level with the gun
you can get clamp on rail bubbles and then you need a small bubble level for the scope, easy to find
Please bear in mind that any jig that establishes a reference against some surface on the gun is fundamentally flawed. There is no guarantee it will yield a satisfactory result unless the gun is mechanically perfect and the scope rings perfectly center over the rail.
Refer to the discussion here for more info, plus a free and easy way to align a scope properly with nothing but a mirror.