KirkII, I agree with you 100%. It's not just about the ability of the archer, it's about the multitude of other variables that can and will happen. Jumping the string is just one of those variables. Animals are constantly moving, they don't stand still for long. There is a point, where no matter what the speed of your bow is or how good of a shot you are, a variable like a gust of wind, or another animal startling the animal, or that single step to grab another blade of grass or what ever, that the distance becomes too far. What is that distance?... I really don't know, but to just say that it depends on the comfort level of the hunter at that particular time, is not looking at the whole picture. I will say that most bowhunter education courses teach that approximately 40 yards under ideal conditions is about the max. Please notice the word approximately.
JasonV, no one and I repeat no one can tell when animal is or isn't going to move and I will use the word unethical when it comes to 100 yards shots at a living breathing animal.