The intent wasn't "not to kill", the intent was that if you had somebody shot through the leg or gut and then lived, at least they would have a fighting chance at survival if they made it to a field hospital due to it probably making a cleaner wound. You get shot in the leg with a hollowpoint, especially back then, and there would be so much mangled flesh that a deadly infection or bleeding to death would be a much higher probability. Of course with modern 5.56 rounds that use up all its energy so quickly, the end result is about the same or worse, so it's kind of a moot point. The Geneva convention was rules for soldiers from different countries killing each other. It doesn't apply to trying to squash domestic uprisings and police-like work, which is who is doing all this buying that's being talked about. However, interestingly enough, (I'm pretty sure) most all our military snipers use boattail hollowpoints nowadays. Not sure how they get away with doing so, but they do.