All I can say is: You are one hell of a shot. Or a damned liar! Do as you will.......I'm curious as to your reasoning for this? Do you have a factual reason for making that statement? I'm not trying to be aggressive, I just find it frustrating that people try to inject their own ethics onto others. Just because you don't shoot past 300 yards doesn't mean you need to tell others not to.
I shot my buck across canyon at 476 yards last year, and my elk at 640 yards. Would being closer make them more dead?