full brass cased 12 gauge in a semi auto?

i have always wanted to try my hand at seeing if i can get some full solid brass cased shells of 12 gauge to feed reliably in a magazine fed semi auto shotgun- more precisely a AK (saiga 12)

Who shoots 12 ga. Round Balls

Amd-65 Oklahoma Shooters

Magtech Shotshell Hulls 12 Ga 2-1/2 Brass Case of 250 (10 Boxes of 25)

Brass shotgun hulls.

First 9mm ammo Ive seen under 30 cents a round, Page 2

12 Bore / 12 Gauge – Big Game Loads: – Aria Ballistic Engineering

SKO Mini 12ga Semiautomatic Shotgun. 14 ¾” Barrel. - Standard Manufacturing LLC.

Townley's American Boy 12 Gauge

ADG Brass? Edited: Details and measurements

ADG Brass? Edited: Details and measurements