That's probably a good plan. My old Leica 1200 would do it pretty consistently, but a Nikon 1200 really struggled (once in a while it would range 500 if lighting was just right) Once I bought the Leica 1600, I stopped looking at rangefinders, because it does everything I need and the better optics made it useful in low light situations where I couldn't see my target with the cheaper models.Thinking I need to buy something that's at least labeled 1600 yards to get a 500 yard reading on an Antelope.