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

Why do some people cut the shotgun shell in the middle but not break it off? Is it true that the bullets are more concentrated in one direction because they are blocked

What is thicker, 12 or 14 gauge steel? - 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

Remington UMC Leadless 9mm Luger Ammo 124 Grain FNEB - Ammo Deals

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

Lead Ammunition Poses Real Risks. Why Won't Gun Owners Switch?

Choosing the Best 9mm Target Ammo

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

As Deadly as it is Beautiful: Brass Based Expanding and Fragmenting Shotgun Slugs -The Firearm Blog

Why are shotgun shells made of plastic? - 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;

Full Metal Jacket (FMJ) vs Hollow Point

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;

Has there ever been use of harder materials used in shotgun wads like wood? I'm thinking of making a wad (shaped like a TPS wad with no slits) made of wood so

Full Metal Jacket Boat Tail Ammo at : FMJ-BT Explained