Awesome video! I have some of that S&B ammo. 3" Magnum (max load) OO Buck (15 pellets).
I fired the S12 again today. I had much better luck with Federal and Remington 8 shot vs the Winchester 8 shot. I also shot some Nobel Sport 2.75" OO Buck (12 pellet) and the S&B 3" Magnum OO Buck.
I also have some Federal and Winchester 3" OOO Buck. Haven't tried that yet.