I’ve seen hot brass fly and land in the collar of someone’s BDUs. They danced while the brass fixed itself to their skin. Pulling it off left a bloody bare patch of neck. It was gross. So what did this guy do wrong? First, he is wearing safety glasses with a huge gap along their front. Second, where a cap with a bill. Third, learn a better stance and don’t let the recoil decide where the gun is going. His arms are reacting to the recoil and throwing that brass right back at him.