interestingly, in many states only expanding bullets are legal for hunting since solid bullets just dont work and result in a wounded animal running off.
odd that the reverse is generally true under geneva convention, i believe. no doubt a freeper will double check me on that.
The real purpose of jacketed bullets used by the military is to wound the enemy. It ties up several others to care for a wounded. A dead enemy can be forgotten.
Ultimately, a war is economic and the first to run out of troops and recources is more likely to lose.
Troops that are tied up moving wounded or providing care for wounded cannot be used as front line troops.
I'm pretty sure you are correct, and that jacketed bullets are required under Geneva.
'twas an amendment to the Hague Convention of 1899 - which the USA did NOT sign. Jacketed hollow/soft-points were new and unusual at the time; now, 106 years later, they're the norm.