Regular full choke is fine, extra full is fine....pass shooting is the most common......most laws require a perimeter around stock yards, most owners don't want hunters on top of their cattle....we don't shoot them off the wires, trees or ground out here....at least I don't....they are fast and furious and fun....I use 7/8 oz. in the 16's , and 7/8 oz. in the 12's also....I don't need an oz., usually limit out in 15 to 30 minutes, depending on the birds.......Lived in Tucson for over 25 years, same thing there......

Doug