no
yes
Barett 50 Caliber and the Desert Eagle.
The Desert Eagle is capable of using either .44 or .50 caliber ammunition, although the .50 requires a barrel swap.
100-500 or more depending on specifics
No. The Luger was a 9mm gun and the 50 Desert Eage is a 50 caliber gun. The 9mm round would fall out of the barrel, and if you did manager to get it to fire, you could damage the gun and/or hurt yourself.
The 50 cal desert eagle uses about 100 grain charge I believe. It would go far, but would only be accurate to about 50m.
Sure, why not. Except the Desert Eagle is not made in .22 caliber.
No. Other pistols chambered for the .50 Action Express cartridge as used by the Desert Eagle include the AMT AutoMag V, Freedom Arms 555, Magnum Research BFR, and LAR Grizzly Win Mag.
The Desert Eagle was never made in .40 - available chamberings included .357 Magnum, .41 Magnum, .44 Magnum, .50 Action Express, and .440 Cor-Bon.
High caliber weapons like the intervention, barret .50, desert eagle
It depends on the laws in your country. In the US, you can. The Desert Eagle is strictly a civilian market pistol, anyhow, with no practicality for law enforcement or military usage and since the American law does not count against high caliber bullets that a Desert Eagle can use (.357, .44, or .50 usually).