Neither the names of the victim nor the father were released.
Investigators told news agencies the 39-year-old victim and his father were hunting about 6 p.m. when the younger man walked into the father's line of sight. He was struck in the chest with a bullet from a .270-caliber hunting rifle, the news report says.
The son later died from his injuries.
The Beauregard Parish sheriff's office said no charges were expected be filed because they believe the shooting was an accident.