I recently purchased the same model scope with the exception of having duplex crosshairs. It took the place of a Millett Buck Gold 4-16X56 pre side focus on my 7mm STW. I am impatiently waiting for cooler weather to bring it for a test run at the range. The original Millett scope gave me fits( I went through 3) on the STW. The first one that I mounted work fine for several trips to the range and then mysteriously would not hold zero. The second scope held zero perfectly. I made one trip to Alabama, shot 3 shots, and brought it home. Somehow, there was an internal problem with the scope and all of the targets were elongated. Similar to The word STOP on the pavement in a parking lot. The 3rd scope seems to be working really well. It keeps zero, clarity is excellent, and adjustments are repeatable. I have had it on the rifle for the past 4 years with no problem. All problems with the original scope were promptly handled by Millett customer service. I am anxious to try the new scope and see what I can get out of it and if it is as dependable as my 3rd scope.