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Would they not be able to go through metal detectors or get MRIs? And is lead poisoning not an issue? Maybe getting it out is more risky, but it seems like there'd be downsides.
Iirc lead poisoning isn't much of an issue because your body encapsulates it, preventing the body from absorbing it.
Metal detectors are a non issue. My dad has several pieces of metal in his spine from surgeries. He occasionally sets off metal detectors, but it's never been a huge issue with security. It's more common than you think. People have metal plates, screws and general hardware put in surgically for a variety of reasons. It's fairly common.
Humans are so metal (with a little bit of surgery)
Probably depends on the round as well. NATO rounds are fully jacketed so the copper would have to dissolve before the lead was exposed to the body. For a hollow point or otherwise damaged round, then I think yes lead would be exposed to the body. No clue about danger of that though
You got me thinking. Cheap, non-hollow point rounds of all sorts are jacketed. I buy the crappiest ammo I can find and the .22s are the only rounds with exposed lead. And some of those are copper clad.
Copper being more expensive than lead, why is that? Smoother feeding, don't get dented up, something like that?
Ooh look up dum dum rounds, there was a YouTube video I watched recently, but if you like firearms it's a fun watch.
So iirc, lead is so soft that when we started using auto feeding the lead deformed and you would fail to load a round. Copper is used because it is softer than the steel barrel so the rifling will grab onto the bullet, but hard enough not to deform with normal use and in the barrel.
But then you find out that they are bad at killing humans.