In the US, kill zone diameters vary from a minimum of 0.375 inches (9.525 mm), to a typical kill zone diameter at distance of 1-1/2 inches (3.81 cm). Occasionally, kill zones to the maximum allowed 2 inches (5.08 cm) are used. The ranges of the targets must be between 10 yards (9.1 m) and 55 yards (50.3 m), and they are arranged in lanes of 1 to 3 targets. Kneeling and standing shots are also the norm at every match but not as large a percentage of the match as in the UK. Hunter class has also started with a very strong following.