Why are shotgun shells made out of plastic while rifle shells are

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Why are shotgun shells made of plastic? - Quora

How Do Shotgun Shells Work? What Are Shotgun Shells Filled With?

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Why are shotgun shells made out of plastic while rifle shells are made of metal? - Quora

How do shotgun shells work? - Quora

Why do shotguns have different looking shells than rifles? - Quora

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Why are shotgun shells made out of plastic while rifle shells are made of metal? - Quora