Gent I shoot with fairly often at range tried a firefield scope because of its low price and he wanted a high power scope for 400-600 yd target shooting. I've viewed thru the scope ( a 10-40 power I think) at a 100 yd target and our 200 yd berm. Optics were decent to my old eyes....but nothing to brag about. About 2 weeks later, guy will show up with an $1800 Nightforce scope on the same rifle. LOL, what happened to the firefield, I asked him. He explained there was a problem with screw in its elevation turret that needed to be removed to reset it to zero....some kind of problem with its threads. Now I've noticed the Firefield on another one of his rifles and it seems to do ok for his 100-200 yd target shooting.