Question

gun bullet is made up of which material and why?

Answer 1

hllo neha mam .......
$\red{Baton \:round}$:
a generally non-lethal projectile fired from a riot gun. Armor Piercing (AP): A hard bullet made from steel or tungsten alloys in a pointed shape typically covered by a thinlayer of lead and or a copper or brass jacket. The lead and jacket are intended to prevent barrel wear from the hard core materials..
so ur question was .gun bullet is made up of which material ??
so directly ur answer is it is made with$\textbf{ steel}$......

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Answer 2

Bullets are made of a variety of materials. Lead or a lead alloy (typically containing antimony) is the traditional bullet core material. Traditional bullet jackets are made of copper or gilding metal, an alloy of copper and zinc. There are many other materials that are used in bullets today, including aluminum, bismuth, bronze, copper, plastics, rubber, steel, tin, and ᴛᴜɴɢꜱᴛᴇɴ.....