However the target again is very small. If possible, avoid this shot and wait for a better opportunity. Keeping the following facts in mind before taking a shot will help you make wise decisions. When shooting at deer with bow and arrow, aim for the heart regions. The average whitetail deer, weighing about 150 pounds, carries about eight pounds of blood in its circulatory system.
Massive hemorrhage is necessary to bring the deer down quickly.
A deer must lose at least 35 percent of its blood, or 2.75 pints in a 150 pound deer before falling. The better the hit, the quicker the loss. Deer blood carries high levels of vitamin K1 and K2 in early autumn. Vitamin K is an anti-hemorrhage agent, which greatly aids blood clotting. Frightened whitetails produce high levels of B-endorphin, which supports rapid wound healing.