well you ask a question that I am surprised has not got a rise here. I have got 3 of them all 3-9x40 lighted recticle. I have them on 270 win, 243 rem, 7mm08 and my brother has one on his 50 cal Encore shooting 150 grs with a 295gr bullet and have had NO Problems at this time. I can pull sub minute of angle groups with all guns. I think for the money they can not be beat. I feel they are better than any Tasco ever made.....