Gun Drilling is a deep hole drilling process used to create precise and accurate holes in metals and alloys. The process involves a long, thin drill bit with a coolant flowing through it to lubricate and cool the drill bit. The coolant also helps to remove debris from the hole, resulting in a high-quality finish. Gun drilling is commonly used in the aerospace, automotive, and medical industries to create parts such as engine components, medical implants, and fuel injectors.