Step Seven - Have the assistant who will fire the trigger, out of camera shot on the ground. Here stuntman Stephen demonstrates what the setup would look like if it wasn't concealed underneath the shirt. When positioning the camera be careful. The force was so powerful on one of the tests we ended up showering the camera operator with blood. If you are straight on get a good distance away and zoom in.
Blood flies everywhere.
The delivery tube had to be much shorter as the compressed air had to fire up and out, - working against gravity. If you listen carefully you can also hear the compressed air hissing. In truth there is probably only one or two frames where you can see a flash of red spray. If you pay attention whilst watching some action movies you'll notice the same thing. Most bullet hits are one frame wonders, barely enough for the eye to register.