So, if you're using irons and you see game beyond your self set range, do you just let it walk?
If it is too far away get closer. That applies whether I'm hunting with a scoped rifle, one with open sights, a shotgun, a bow, whatever. You need to know what your maximum is with the gear you have, and stay within it.
Getting closer is at least half the fun anyway. There's nothing like the charge I get from it, and succeeding despite the advantages the animal has. And if I can't get close enough to make the shot there'll always be other opportunities. YMMV
