Only elk I dropped was with a .50 cal MZ because I hit the spine. Quickly reloaded as she was trying to get up and put another on her just behind the shoulder. She tried to get up yet again and nd I walked up and put one right behind her ear. I put one picture perfectly dead center through the heart on my last bull and he took off running, didn't see him flintch, didn't hear the bullet smack. Thankfully my wife saw him stumble when the bullet impacted and heard rhe the smack of the bullet or I would have thought I missed because I found 0 blood or any evidence of a hit. He ran 100 yds and piled up. Just not elk, I have killed deer and antelope that had the heart destroyed that either ran or stood there like nothing touched them. Animals are tough! How many people can get a leg blown off and 3 days later be chasing some gal around like nothing is wrong?