when does a 50mm obj become needed for hunting? unless its some sort of specialty hunting I am going to say hardly ever. I have been using a 2.5-10x32 NXS compact on my calling rifle the last couple years. seeing a coyote in sage brush is hard even with excellent light, seeing one in bad light well that is really tuff. With the distances you should be shooting at or should I say NOT shooting at. 5 or 6x is all you need your scope at, even with the small 32mm objective its still plenty bright at that power. 5 or 6x with my little 32mm obj I can make a shot on a coyote out to at least 250 yards until its not legal light to shoot anymore.