A 50mm would not balance right on a lightweight rifle and would not fit correctly in a Scabbard. Your cheek will come off the stock and affect your shooting unless you shoot it extensively and get used to the sight picture. Glass quality is what matters and I['ll give you an example... On the property I hunt in Alabama we have a shooting house that sits across a lake from a greenfield. Deer do not come out into that field until 5-10 minutes at end of shooting light. 2 years ago I spotted a Buck feeding in the field at last light just as I was going to get out of the stand . I could see him as if it were daylight thru my 8x42 Leicas. I put them down and picked up my borrowed rifle which had a 3.5-10x50 leupold on it . I couldn't see half the detail of that deer that the binos showed and it
looked like a grey blob.


I would take the Zeiss Conquest first and there is nothing wrong with the Nikon 40mm scope either except their mounting tube length is a little shorter then the Zeiss.