What are some unique guns/ballistic weapons in your worldbuilding that aren't laser or plasma-based?

The world I'm working on has "Chance bullets". They're like regular bullets, but they're enchanted in a way that can make them more or less lethal. There are bullets with a 100% wounding rate and 0% death rate, used for crowd control. The most common types in war are 50-50 bullets (50% chance to kill, 50% chance to wound) and 60-40 bullets (60% chance to kill, 40% chance to wound). Bullets with a 100% chance to kill are used by snipers and armies that do not adhere to the rules of war.