I have heard a couple of people mention impact pressure or energy is too small with the .30 cal, but in the books that I have read almost all of the military snipers use primarily the .30 cal bullet. They shoot, and kill, targets/people at up to 800-1000 yds consistantly. If the round has enough energy to drop a person dead in his tracks, and even knock them back many feet, then shouldnt it have enough energy to drop a whitetail or mule deer at close to those distances? Once again I am just asking, kind of curious if I am wrong in how I am thinking.