Why do shotgun shells have brass or steel encasing the base while

What is the wall thickness of a shotgun shell? - Quora

Why don't shotgun plastic shells melt? After all, there is an explosion inside it - Quora

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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

How do shotgun shells work? - Quora

What is the diameter of a 12 gauge shotgun shell right before the rim? - Quora

Why are shotgun shells made of plastic? - 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

I got my grandpa Winchester model 25 12 gauge pump action shotgun and I'm trying to figure out if it should be able to fire steel birdshot or do I need to

A Brief History Of Ammo - Wideners Shooting, Hunting & Gun Blog

How do low brass and high brass shotgun shells differ? - Quora

I've seen short gunshot shells or mini shells for the first time last week. I'm a reloader and I reload shotgun shells. Seems like I can crank out a bunch of these;

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