dont worry pal happens to us all.i cant tell you how many times i forget to jack a round into the chamber,take off the sfety forget a primer,the list goes on.like someone else said be happy your tactics were solid and you at least saw the deer and got close to your enemy.The native American Indians used to call this counting coup
Now therefore take, I pray thee, thy weapons, thy quiver and thy bow, and go out to the field, and take me some venison.
Genesis 27:3 "The thinking deer hunter should mature through three phases during his hunting life. First phase, "I need to kill a deer." Second phase, I want to harvest a nice deer. And last phase, we must manage this resource so our children and their children can experience the grand tradition of good deer hunting." - Jim Slinsky