There are a few videos on the internet that show long-range firing going almost deadly, when, supposedly, the shooter's own bullet ricochets at the target area, and comes flying back at the shooter.
Is it really possible?
Yes. Your own video shows it, and there are several others on YouTube that do. But for the sake of proving this...
Monan Jauhari, the Assistant directory of India's Central Forensic Science Laboratory wrote here about Bullet Ricochet from Metal Plates
When a bullet strikes a target of sufficient solidarity at low angle it may, while maintaining its integrity, be deflected from its original path as a result of impact and travel in a direction quite different from its original one. Such a deflection of a bullet constitutes a true ricochet
When you shoot a solid target, the bullet can deflect. If the target is angled properly, it can deflect back at you.
Edit: Since comments and votes positive/negative keep happening on this, here is a better source. The International Journal of Legal Medicine, A case of “boomerang” bullet ricochet.
Due to the perpendicular impact resulting in a centric and symmetrical deformation, the fragment moved in a direction exactly backwards along the original line of fire.