Why don't shotgun slugs and shot use full metal jackets and why

Why don't shotgun slugs and shot use full metal jackets and why

Understanding Shotgun Shells

Is Personal Defense Ammo Worth it? Absolutely - Spring Guns & Ammo

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

Why don't they make pointed shotgun slugs? - Quora

Why is there a limit to how many shotgun shells a shotgun can hold in the US? - Quora

Is the plastic part of a shotgun casing dangerous if hit? - Quora

Shotgun slug - Wikipedia

What shotgun shells do the police use? - 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

What is the point of having shotgun slugs as opposed to bullets? - Quora

Soft Point Bullets - What Are They & Why Use Them?

Winchester Super-X Rifled Slug Shotshells