Dumdum. Dumdum...x
Yes
Copper i assume
Lead
Not normally. BB are 177 cal, air soft is 6mm
This is a much longer subject than we can address on WkliAnswers. There are BULLETS (the projectile portion of a cartridge) and there are CARTRIDGES (consisting of a cartridge case, primer, powder, AND bullet) See if your library can get you a copy of Cartridges of the World. It is a good general introduction to the several thousands of different cartridges. BULLETS can be categorized by shape and by composition. The first was the round lead ball used in muskets. Later this changed to a cylinder with a rounded nose, then a lead core surrounded by copper/nickel jacketing, then a pointed bullet (spitzer) and so on. There are "soft nosed" bullets with the lead core exposed at the tip, and bullets made of different materials- copper, bronze, plastic, etc.
Lead is too soft to use in a gun. However some bullets are made with Lead.
There are many types of bullets available for the kids toy called Nerf Gun. These bullets come in many shapes, sizes, and colors, and are soft to the touch, which means they will not cause injury.
About 99%. Lead is an inexpensive metal that is soft and dense- 3 criteria for bullets. Most will be made of lead- if not entirely, they will have a lead core covered by another metal, such as copper.
Lead is a soft heavy grey metal. It is what is used to make bullets. It is easily dinged or reshaped due to its soft nature. Alloys made with lead, such as pewter, are usually soft as well.
Non- toxic, soft enough to be engraved by the rifling, not so soft as to smear of the inside of the barrel when driven at very high speeds. Relatively cheap metal.
You dont. If you try youll just mess it up. Buy them already made. Its not that expensive