A scope can be mounted in about 10 mimutes using these rings. I have a set on a Browning A-Bolt 325wsm and a Weatherby 243. Scopes have stayed sighted in after a box of ammo and a season of riding around in a jeep.
Pros: Easy to install.
Cons: Lacks fine adjustment.
This review was written in the old system and had content requirements that are different than reviews written today.