In the methodology section: "...firing angle is extremely important. Bullets fired at an angle maintain their angular ballistic trajectory and are less likely to tumble, allowing them to pick up more speed on the way down."

I wish that part had been better examined and explained. Perhaps the authors are trying to say that there's a chance that a bullet will NOT tumble, the probability strongly influenced by firing angle but always nonzero, and they're just talking about the subset of non-tumbling bullets? It would be helpful if they were more clear—given the moralistic tone of the entire piece, leaving that part vague weakens the argument.

Random question: do blanks not have enough recoil to feel satisfying for a celebration/commemoration? I don't know much about guns.