I have been using this scope for 3 years on a 7 mag with no problems at all.3 trips to Colorado and 3 nice mule deer bucks plus many white tail taken with this scope.once set scope has been on every since.And of course its only guaranteed not to fog on the inside.Keeping the fog off the outside is your job..
Pros: Clear and brite in low light
Cons: none so far
This review was written in the old system and had content requirements that are different than reviews written today.