Sport concussion is currently a widely researched topic. Shooting sports do not impose a direct blow to the head but inflict rapid accelerations to the brain via recoil transfer. Repetitive gunshot recoil can impose neurometabolic change resulting in concussion like symptoms or traumatic brain injury (TBI). The impact of recoil on TBI is not determined. Evaluating brain specific blood biomarkers can contribute to neuroscience research in shooting sports, law enforcement and military.