Jumping the string....OVERRATED!!! Do I believe a deer can react enough to make a difference of where the arrow hits if an arrow is flying at 300fps and the deer is within 20 yards? I guess. How much? Not much. My point would be that there is not a human alive that can say that the reason they missed or wounded a deer is because the deer "jumped the string"...UNLESS they had super slow-mo video of it as it occured and only AFTER they viewed it could they offer it as a conclusion. I hear the ole "jumping the string" excuse waaaayyyy too much. It's like every time a guy misses or wounds a deer he follows it up with, "well, he jumped the string"...how do you know that? I agree with BOWFANATIC that most wounds and misses are hunter error and NOT the "jumping the string" phenonmenon. I wounded a nice buck this year and I'll admit it was a bad shot and the flippin' buck didn't jump the string.