Local Government Code §229.002

A municipality may not apply a regulation relating to the discharge of firearms or other weapons in the extraterritorial jurisdiction of the municipality or in an area annexed by the municipality after September 1, 1981, if the firearm or other weapon is: (1) a shotgun, air rifle or pistol, BB gun, or bow and arrow discharged: (A) on a tract of land of 10 acres or more and more than 150 feet from a residence or occupied building located on another property; and (B) in a manner not reasonably expected to cause a projectile to cross the boundary of the tract; or (2) a center fire or rim fire rifle or pistol of any caliber discharged: (A) on a tract of land of 50 acres or more and more than 300 feet from a residence or occupied building located on another property; and (B) in a manner not reasonably expected to cause a projectile to cross the boundary of the tract.