Yes, .44 Russian and .44 Special can be fired safely from a .44 Magnum revolver. They are the same diameter, shorter, with less power. Also darned hard to find and expensive.
If the Anaconda is a .44 Magnum, yes, you can shoot .44 Special in it all day. Also .44 S&W American and .44 Russian if you are of a mind.
In a .44 Magnum revolver, yes. In a semi-automatic .44 Magnum (such as the Desert Eagle), no.
NO
44 magnum and 44 special.
yes.... with a 44 magnum
.44 Long? Check your cartridge again. As for your question, whatever you have, I'm almost 100% certain it won't be compatible with a .44 Magnum firearm. The only cartridge backwards compatible with the .44 Magnum is the .44 Special, and even that has limitations. .44 Special can be fired in a .44 Magnum revolver, but you need to check with the manufacturer before attempting this with a rifle, as the rifle will have a headspaced chamber.
No, you cannot. The .38 Special can be fired out of .357 Magnum revolver (but not automatics or lever action rifles), however.
Not safely. Despite the tales you have heard about this, the pressures of a .44 Magnum are well above the design pressure of a .410. WHEN (not if) the gun fails, someone is going to be hurt. No. Don't.
.44 Magnum
It can use either 44 magnum or 44 special
Yes. The 44 magnum can fire 44 special ammo in the same way a .357 magnum can use .38 Special.
Yes, and it is more comfortable to shoot than .44 Mag. Clean the cylinder chambers well after shooting to prevent carbon buildup ahead of the cartridges.