I just bought one a couple of months ago and have it mounted on my stevens 7mm-08. Used it out to 578yds so far and it have shown to be quite dependable. I so far am impressed with it. Now, me shooting at 578yds, not so impressive..............

. Seriously though, It shows accurate repeatability and has not lost any zero that I can see. I thought that a fixed power, no adustable objective scope might be an issue, but once i got used to it, all was good. And, the scope is crystal clear.....