A big idea would be to find a way to create a database of firefights (using police encounters for example) with which ammo was used and which parts of the body were hit and what was the outcome (none, incapacitation, death...) to try to infer a simulator that would calculate incapacitation probability according to shots landed and ammo used.
We could learn about other aspects of external ballistics and create tools for them https://en.wikipedia.org/wiki/External_ballistics
For example a tool to adjust a scope or something
A big idea would be to find a way to create a database of firefights (using police encounters for example) with which ammo was used and which parts of the body were hit and what was the outcome (none, incapacitation, death...) to try to infer a simulator that would calculate incapacitation probability according to shots landed and ammo used.