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

Seeing that shotguns use plastic shelled rounds, why don't guns generally use plastic shelled rounds? Would it not be cheaper and just as effective? - Quora

What is Shotgun pellets made of? - Quora

Is a shotgun shell and a bullet the same thing? - Quora

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

Best Shotgun Shell Holder Guide [2023]

Toy Gun with Soft Bullets, Shell Ejecting Foam Bullet Blaster Toy Pistol Model, Non-Aggressive Shooting Game Educational Toys Gifts for Kids Boys Girls Adults Ages 14+ (Green) : Toys & Games

Why are high-caliber rifle cartridge cases shaped like a bottle? - Quora

True Velocity's New Polymer-cased Ammunition - Guns and Ammo

Shotgun shell - Wikipedia

If shotgun shells are made of plastic, is there a risk that they might melt inside the magazine tube after prolonged shooting? Or is this not an issue with most modern shotguns?

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