Sorry, Standing Wolf, but the concept of "intent" is common in law, and very often means the difference between walking around free and going to jail. Many laws are based on "intent" and the state must prove "intent" in order to convict. How does the judge or jury know the mind of the accused? By his/her words or actions. If I fire a "shot" from a potato gun that breaks a neighbor's window, it could be an accident and unintentional. But if I keep shooting until I break all his windows and then shoot at him, I have little doubt a jury would feel that my potato gun was being used as a weapon.
CB90DF, the pistons might be "projectiles" but the usual wording of the law uses the term "expel." If your engine expels its pistons, I think you have a rather serious car problem.
Jim