When a rifle is fired, how does the bullet separate from the shell

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Firearm signatures on a fired cartridge case include the firing pin

Why do rifle bullets spread out when shooting at a target? - Quora

How does a bullet stay in the casing without falling out? - Quora

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When a rifle is fired, how does the bullet separate from the shell, or why does the shell not exit the rifle as well? - Quora

How do same bullets perform differently in terms of ballistics when fired from different firearms? - Quora

Are bullets really larger than the barrel caliber? How could it go through the barrel then? - Quora

A person fires a rifle at a target. The bullet leaves the rifle at 460 m/s and the person hears the bullet strike the target 2.00 seconds after firing it. The air

How are spent shell casings ejected from large bore, breech loaded guns? - Quora

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