Copper, Lead
Copper i assume
Lead, with a copper jacketing.
Any gun can.
lead, copper, steel
Bullets are typically made of lead, although some modern bullets may use alternative materials such as copper or steel. Lead has been traditionally used due to its density, which allows for better accuracy and stopping power.
Bullets have been made from several types of materials. The most common is lead and lead alloys, sometimes wrapped in a jacket of copper, copper/nickel alloy, or soft steel. There have been bullets made of plastic, powdered iron, steel, pure copper, tungsten, aluminum, bismuth, and even wood. Of course, the Lone Ranger carried silver bullets...
Usually they aren't. Lead, or lead in a copper shell (a "jacket") is the most common choice for bullets. Bullets CAN be made of mild steel, usually also copper jacketed, and it's usually done because of concerns about the lead from the bullets causing pollution. Mild steel is one of the less expensive replacement options for lead in bullets.
Bullets can be made from many materials including wood, steel brass, copper, lead, tungsten, bronze, plastic, etc.
Copper/brass: Used for bullets and fuses for every bomb and artillery shell (includes naval guns).
they use (Lead) because it has a low melting point and easy to mold and cool. they also use it because it is light enough to be shot farther but it also has enough weight so the wind wont affect its accuracy as much Lead is used only in cheap bullets. Better bullets are an alloy of lead and antimony. Many common lead bullets have a copper or steel 'jacket' -Most accurate rifle bullets are a bronze-nickel steel mix, or a copper alloy.
The same metals used in long guns: A lead core with a copper jacket. Due to concerns about lead polluting the environment, some bullets now contain Bismuth or other metal.