speed of sound. 1200 fps is how fast the sound of the arrow and bow gets to the deer.
The arrow... under 400 fps.... 3 times as slow..
21 yard shot, the deer hears it when the arrow is at 7 yards give or take.
Watch one eat once. Watch a bird swoop in, see how they flinch. They are not trying to duck the arrow, they have to drop some to get spring in them to "jump" away from teh sound. Even whirling they have to squat a bit.
I had my best buck to date the otehr day at 25. I can easily hit him in the ear at 25... But I was patient and let him come to about 15.... if he would have walked away, I"d have let him...at 25...
You don't have a short range quiet rifle. You have a loud crossbow.
They can jump a crossbow. Generally I've found not all the way, but the buck I shot the ohter night, was hit about 2 inches higher than I was aiming when the arrow left.... he was ducking.... at 15 steps.
