If a .50 caliber BMG long gun doesn’t quite cut it for you, maybe this will:

An Ohio-based gun company has developed the world’s first .905-caliber rifle that - at .905 - is the highest-caliber rifle in the world.

And with bullets that cost more than $40 a piece, you’ll probably think twice before pulling the trigger.

[ . . . ]

The rifle fires rounds about 2,100 feet per second with roughly 254,000 foot-pounds of muzzle energy. The gun also has 2,777 foot-pounds of recoil energy, which essentially makes it as powerful - and has about as much ‘kick’ - as firing 10 .30-6 rifles at the same time.

Video at the link.