I used a 110 grain bullet in my 30 06 one time at max load'' the buck I shot went down but got up and ran toward me , passing me at about 4 feet. I diden't see any blood on him and wasen't sure he was the one I shot. he ran about 40 yds past me and went down . when I gutted him his heart was blown to pieces as was part of his lungs.. how do they manage to do that? the bullet never came out..I went back to the 160 gr bullets that I usually used..that was an experiment to see if hi speed would stop them from running.