I'm sure you could but beyond 50 yards without optics you are guessing. In my mind, repeating your successes is the hallmark of proficiency. Guessing is not a part of that equation. At least in my experience it isn't.
"The future is already here - it's just not very evenly distributed."
Originally Posted by the_chemist
"If you can't dazzle them with brilliance, baffle them with bull****" is my motto