Even though mine is set at 20, 30, and 40 ... I totally agree with the above advice. I've been shooting for years, and still think very, very long about releasing on an animal that's 40 yards away. Too much can go wrong that I don't have control of. If the animal simply takes a step, what was going to be a perfect double-lunger may now be a long, frustrating night tracking a gut-shot animal.

That's why my 20 yard pin is green (for go), my 30-yarder is yellow (caution, wait a minute... let's think about this), and my 40-yarder is red (stop! Do you really want to take this shot?). That's also the reverse order that they're harder to see when it starts getting dark... leaving me with my brightest (my green pin) as the last one I can't see... which means the darker it gets, the closer a deer's gotta be before I'm gonna let go with an arrow until I finally lose all shooting light.