Only Remington knows.
Are you asking what is the maximum range a 44 magnum projectile will go when fired?
100-400 USD depending on condition
.44 Magnum
In a .44 Magnum revolver, yes. In a semi-automatic .44 Magnum (such as the Desert Eagle), no.
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.
I have seen them sell for between 400-500 dollars depending on condition and a good bore.
There ARE rifles and revolvers chambered for the 44 magnum cartridge. If the weapon is marked ".44 Magnum" then it can be used in that weapon. You should know that there are other .44 caliber catridges, and THOSE weapons (44 Special, 44-40, etc) cannot use 44 magnum loads.
How much does a astra 44 magnum ctg cost
well i have a 44 magnum the maximum distance is 1 kilometre
.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.