It depends on how many times you press the trigger.
4 darts per second
10
it shoots 60 darts!
The stampede can shoot as many darts as you have loaded into clips, and fires at a rate of 3 darts per second with fresh batteries and will slow to about 2 darts per second as the batteries are used up (this will take a while if you spend a few extra dollars and get a better brand of D size batteries). You are probably aware that the stampede comes with 60 darts which are loaded into the 3x 18 dart clips and the 1x 6 dart clip. If you become quick at changing the clips you will fire all 60 darts in under 40 seconds!
Seven to ten.
The Raider can hold up to 35 darts, and comes with 35 darts.
11
no limit
around 25.
The Nerf Mavrick fires all of the darts apart from Glow in the Dark so that is The Whistler Darts, Dart Tag Darts, Clip System Darts, Streamline Darts and Suction Darts.
24 clip system darts
eight suction glow darts