Secret Reload Animation for Combat Shotgun

So over on r/Doom, someone had been fiddling around with the shotguns because he got stuck inside the train in Advanced Research Complex, and immediately after firing the SSG, he went straight back to the Combat Shotgun only to find that it actually has a reload animation!

The reason this exists as its own thread is because it provides a new and interesting insight into Doom 2016’s development, namely that reloading was actually considered for implementation at one point during the rebooted project’s development cycle and NOT during Doom 4 1.0’s development. 

He is gonna put 50 shells and pump it.

I'd like to see how the different the game would play with every weapon having a reload function, a man can dream.

EDIT: on second look, this looks more like a reload animation for alt-fire and not regular shots.

coooool.