I've had about 4 or 5 running shots on antelope, the closest was about 30 yds. I snuck up on a small herd with a nice buck down in a dry wash that had walked behind a sand dune. They detected me and started running out from behind the dune one at a time. The buck was the 3rd one out... full speed... I swung my rifle up to my shoulder and all i could see through the scope was hair... I had forgot to set the power down. I quickly cranked the power down to full low, swung, and dropped him at about 30 yds going full tilt... that was some adreniline!