With Nightforce optics!!!!! took my 5.5-22x out yesturday to do a little yote callin' and it failed, now this is the 4th one i have owned it was given to me by my fiancees parents for christmas the other 3 have been sold because they would fog up and i just dont think they are as clear as a leupold. but i kept this one lying around just in case i bought a rifle and needed a scope real quick for it. So i pick up my Cooper arms rifle Friday go to the range sight it in, Saturday rolls around and i'm going yote callin with some friends figure, hey i'll take the Cooper. we set up and at sunrise we start callin about 25-30min. we get a yote coming in he is lasered at 326yrds now i'm shooting a 243AI with 65 gr Ballistic silvertips. when i get into my rifle the scope is fogged up and there is drops of moisture inside the lens, so from now on there will never be another Nightfarce allowed in my house or near any of my rifles. IMHO they are complete junk and no one should have to have these problems with a scope that cost this much. Just needed to vent sorry if i make some of you mad.