…the most powerful production revolver in the world anyway, and that’s just according to the manufacturer. For whatever reason, Russian designers took to creating a revolver to fire their 12.7x55mm cartridge (speculated to be a cut-down .338 Lapua case…), it has been suggested for the purpose of destroying locks and other objects.
https://www.thefirearmblog.com/blog/2014/09/17/meet-rsh-12-powerful-revolver-world-russian/
I’m fairly certain this is the inspiration behind the Tyr handgun in modern warfare 3. The second picture is almost exactly the same as a pre-made build for the Tyr in game