Elderberry9 I owned a aswift 3-9x40 and for a couple years It was great Then we had a terrible front come in,snow -40 degree,that night I came hime and the swift change of temps caused a ring of moisture around the bell,I brought It back and the company I bought it freom and the handed me a brand new scope.I traded it off but I may have traded a super scope,the guy still uses it.I think I got a lemon,the only other scope I've never had a problem with is luepold.Drop-Shot