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

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

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

What were shotgun cartridges made of before plastic existed? - Quora

Snap Caps-Rifle-Plastic .45/70 ASC4570

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

Why do shotgun shells have brass or steel encasing the base while the rest of the shell is composed of paper or plastic? Is it necessary? - Quora

What are certain shotgun shells used for? - Quora

Cartridge, Types, Calibers, Ballistics

How can a shotgun shell with a powerful charge use a plastic case, but rifle shells have to be metal? - Quora

Cartridge (firearms) - Wikipedia

Why are shotgun rounds just metal balls? - Quora

What was the point of brass shotgun shells, and are they still used? - Quora

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

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Breeder and sportsman. Horses. H mil it REMINGTON LEE SPORTING RIFLE Made in the following Calibers: 6 m-m 236 U. S. Navy, 30-30 Sportinsr, 30-40 TJ. S. Government, 303 British. 7