899 yards is MY personal yardstick on headshots for elk. Go just ONE yard over that, and the guys here will give you a big ol' ration of chit......
Yeah, but it's still not as big as you deserve.....
My personal yardstick has nothing to do with energy, SD, or any of that because I routinely kill elk with slow moving hunks of lead that fail on all counts. My limit is my ability to place the bullet.