Oh, and yeah it is really fucking hard for throwing, thank the heavens.
I really hate the glitch when used by xbows with 1 wpf, but let's stop and think about this for a second.
Scenario: You are really far away, running. You get shot and die to a headshot from someone using the accuracy exploit.
Ok. Let's examine this a bit. A person had perfect timing, perfect prediction on your movement, and perfect aim, calculating the exact drop amount to hit your head.
He didn't make a mistake in ANY one of those, if he did, he would have missed. It is literally the most skillful the shot could be.
Oh, and if they are anything close to mid range? If you try to hit a fancy timing window you are not only an asshole, you're a dead one.
If it does hit? Your still an asshole. Don't exploit.