You will have to tell us if you are talking about black powder or center fire.
The maximum range of a .50 BMG catridge (there are others) - with no accuracy, is about 6,000 meters. The maximum EFFECTIVE range (skilled marksman) is about 1/3 of that. Prior answers to this question attributed a range that can only be reached by the main guns on a battleship.
Depends on the load and range.
If you mean a rifle chambered for the .50 BMG cartridge, such as the Barrett M82, the EFFECTIVE range is about 5,900 feet. The rifle weighs about 30 pounds, and sells for about $9,000.
Yes, I can. A Barrett M107 is a .50 caliber sniper rifle.
1500-2000 meters
You will have to specify if it is a muzzle loader or a centerfire.
50 caliber
Bullets are measured in grains. 50 caliber rifle rounds typcially range from 650 grains to 800 grains. 50 caliber handgun rounds are typically around 325 to 350 grains.
Yes
Any bullet that has a diameter of one half inch is a .50 caliber bullet. There are different .50 caliber bullets- my Hawken muzzle loading rifle shoots a .50 caliber lead bullet, but different from the .50 Browning Machine Gun (that is also used in the .50 Barret sniper rifle)
how far does a 50 caliber sniper rifle shoot accuratly
Over a mile.