Yes
As said below, the Desert Eagle is not a revolver. It is also not cheap, nor in my opinion an especially impressive handgun except to those that fell in love with video games, and do not shoot real firearms.
No, you cannot.
No, you cannot.
In a .44 Magnum revolver, yes. In a semi-automatic .44 Magnum (such as the Desert Eagle), no.
no
100000000 meters
Given the right components, yes.
ALOT
Yes
Sorry- that is not a question. Please reword, and post it again. We will try to help.
No. For one, the shorter .38 Special rounds won't seat in the magazine. Also, unlike revolvers, the Desert Eagle has a formed chamber in which the cartridge seats into the chamber in a manner so that proper headspace is achieved. A .38 Special cartridge will not achieve this headspace, and firing it under those conditions can be very dangerous to the firer and others.
A .357 Magnum can shoot .38 Special rounds as well as .357 Magnum rounds.