Used these rings on a .308 bolt gun. I've got 2 optics setups I switch between. One zeroed in for long range, and zeroed in for close to mid range distances. Quick detach is fast and simple. I've never lost zero on either optics setup.
Pros: simple, holds zero
Cons: n/a
This review was written in the old system and had content requirements that are different than reviews written today.