I have seen a lot of answers, that are telling that it has more damage area and it fits in auto loaders better. I accept the second one, but not the first. Imagine a 9mm hits a vest and… nothing, probably a couple of broken bones, even though it has a larger damage area. Then the person takes their gun and shoots you. Your shots were probably useless. But if that 9mm was pointy it would, depending on the vest, penetrate it and hit the person, severely damaging the person. You’re now safe. That’s my scenario. So why are low caliber bullets not pointy?
In: Engineering
To add to the other comment, the shape of the bullet affects what happens when it hits you.
Many types of ammunition aim to stop inside the body for three reasons. First, the round often spreads out or fragments which causes more damage, second, the bullet stopping means all the energy has been transferred to the body (more damage) and finally it means that you’re less likely to hurt someone behind the thing you’re shooting. Rounds that do this are typically not pointy.
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