Sharpshooter weapon Idea-'Elephant Gun'

This 'Elephant Gun' is a gun uses '.600 Nitro Express' ammo that gives massive amount of punching energy to the target.
(In fact, 5.56mm x 45mm NATO's energy is 1786 J, but .600 Nitro Express's energy is 10301 J!!, about 6 time higher than 5.56mm NATO!)

As you can see by the name, it uses at hunting elephants and rhinos.
It is a double barrel elephant rifle.

Fire Rate:fast
Clip:2
-Firing double barrel elephant rifle
https://www.youtube.com/watch?v=nMUt9debE1g

Thank You for reading my Idea ;D

Sharpshooter weapon Idea-'Elephant Gun'