7 stages

105 rounds minimum  
#7 or smaller birdshot 
(no slugs, no buck)

Stock-5          (Pump or Auto, 4+1 max at any time)
Limited Pump (Start 8+1,  max 10+1 on the clock)
Limited Auto   (Start 8+1,  max 10+1 on the clock)
Open              (Start 10+1, max 10+1 on the clock)