An expert marksman is the subject of Shooter.
A marksman is a person who is skilled in precision shooting , using projectile weapons , usually with a rifle but most commonly with a designated marksman rifle or a special application rifle , to shoot at long range targets . Four levels of skill are generally recognized today in both military and civilian shooting circles : unqualified , marksman , sharpshooter , and expert . Shooter (2007 film) . The film follows Force Recon veteran Bob Lee Swagger ( Mark Wahlberg ) , who is framed for murder by a rogue secret private military company unit .