These are really tough rings and I like them. The reason they don't receive all high marks from me is that I had to spend about an hour lapping the rings to assure a strong fit for my 300 Win Mag. For the price, I think these rings should have been manufactured to higher tolerances that would require no lapping.
Pros: Tough
Cons: Heavy
This review was written in the old system and had content requirements that are different than reviews written today.