On a rifle cartridge, why are the case mouth and neck on the

Cartridge (firearms) - Wikipedia

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Why does the ar-18 have such a strange magwell slope: a reversed ar-15 magwell with more material towards the front of the receiver? And why does it have such a strange bolt

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

Can a .303 British cartridge work for a PKM? - Quora

How do semi-automatic pistols firing a rimmed case (.357 Mag, .44 Mag) headspace? Is it off the rim as a revolver, or off the case mouth as other normal semi-autos? - Quora

Is a neck expanding die necessary?

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What is the difference between a cartridge and a magazine? - Quora