A bullet is made up of what substance?

To determine the substance that a bullet is made of, we can start by examining the most common types of bullets used in firearms. Traditionally, bullets consist of two primary components: the bullet casing and the bullet projectile.

1. Bullet Casing: The casing, also known as the cartridge case, is typically made of brass, though other materials such as steel or aluminum may be used. Brass is chosen for its durability, corrosion resistance, and ease of reloading. It helps contain the explosive charge or propellant inside and provides a seal.

2. Bullet Projectile: The projectile is the part of the bullet that is fired from the firearm and travels towards the target. It can be made of various materials, depending on the intended use and the type of bullet. The most common materials used for the projectile are lead and copper.

- Lead: Lead is used in many types of bullets due to its density, malleability, and affordable cost. In certain cases, the lead may be coated or jacketed to prevent fouling of the barrel and reduce lead exposure.

- Copper: Copper is often used as a jacketing material for bullets. It can help improve the aerodynamics of the bullet, enhance accuracy, and reduce barrel wear. Copper jackets are commonly used in full metal jacket (FMJ) bullets.

It's important to note that the specific composition of a bullet may vary depending on the caliber, purpose, and design of the ammunition. Additionally, modern variations of bullets, such as those made of non-lead alternatives for environmental purposes, are also available.

Remember, always exercise caution and follow relevant laws and safety protocols when handling firearms or ammunition.