How can a shotgun shell with a powerful charge use a plastic case

What is the danger of shrapnel shells? - Quora

How does a gun shoot a 9mm bullet if it is made out of plastic? - Quora

What is the danger of shrapnel shells? - Quora

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

If your shell casings are consistently hitting the deflector of your AR, is your rifle undergassed? If so, how do you correct it? - Quora

What is the danger of shrapnel shells? - Quora

What is the technique used to cut in half Nautilus shells without breaking them? - 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

Plano Shot Shell Box Dick's Sporting Goods, 59% OFF

What is the difference between birdshot and snake load shells? Can you use birdshot in a snake load shell? - Quora

Is the 45ACP designed with insufficiently thin-walled shell casing, or in other words, is there too little room in the chamber for thicker and stronger shell casings? - Quora

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