Why do bullets needs to have shells/casings? - Quora

How does a bullet get fixed in the casing tightly? - Quora

How do guns eject empty bullet casings? - Quora

Why does a bullet have a tapering end? - Quora

How can the rifling inside the gun's barrel induce the bullet to get rotation after shooting, but the surface of a bullets is very smooth? - Quora

Are there any gun designs which hold bullet shells as opposed to ejecting them? - Quora

When a gun is being fired, something seems to come off of the gun like bullets or something like that. What's that? - Quora

How long can bullets be submerged in water? - Quora

On a rifle cartridge, why are the case mouth and neck on the opposite end of the case head? - Quora

Why is brass used for ammo casings? - Quora

Is there a gun that can use different sizes of bullets? - Quora

What is the shelf life of a firearm cartridge? - Quora

Would a solid tungsten carbide bullet ruin the weapons rifling

Is it possible to fire a gun without gunpowder? - Quora

Do the police ever get fingerprints from the bullet shells left behind by a shooter? - Quora