Knowing the timing would be nice to add a competitive element, but is not required at this early stage. The problem with motion of the target is that once few

Knowing the timing would be nice to add a competitive element, but is not required at this early stage. The problem with motion of the target is that once few bullets hit the same spot, the bullet would end up travelling through those holes and won't impact the cardboard which would trigger the sensor underneath. It's not a major concern with .223 but can certainly be a pain for the larger 9mm bullets. Assuming we'll ask the user to shoot only a few making a sensor a viable solution, do you have something in mind?