Effective
"Picked this up to help signt in my new Tikka T3x chambered in 6.5 Creedmoor. I did note some of the play other reviews have mentioned, however when held in place by the bolt, this was not an issue. I was able to quickly get on paper so that I could move out to 100y and dial the scope in. I did remove one star for two things, however. First, and a fairly minor gripe, it is not available in green, which is easier to see when outdoors in a sunny environment. Secondly, and a bit more of a bummer, there is no way to turn it off other than removing the batteries, and since the batteries are rather small for obvious reasons, it is easy to lose them."