That will depend on the law where you live- and you did not tell us that. You also did not say whether the bullet in question was for hunting, self defense, or target shooting.
The State of New Jersey has limits on carrying hollowpoint pistol ammunition, and some states may restrict armor piercing ammunition.
Several states require hunting ammunition to be an expanding type of bullet to provide for quick, humane kills of animals.
US Federal law places restrictions on making or importing certain pistol ammunition that is armor piercing.
The bullet itself - no.
No
no
No.
If you are a felon, you can not possess a bullet proof vest.
No.
Yes you can with a bullet like anything else.
Changed: No, not legally. Even more: In the United States, it is illegal for a felon to possess a bullet-proof vest, and it is illegal for ANYONE to possess one during the commission of a crime.
In the U.S. having a bullet proof vest isn't illegal unless you are a felon (in some states) or are committing a crime while wearing it.
Yes they can. But may they? It is illegal for a felon to purchase or possess a bullet-proof vest in the U.S. under federal law.
Yes, although in reality you may be stopped and questioned by the Police under terrorism legislation.
It's legal to own one and/or wear one as long as you aren't using it during the commission of a crime.