to do with how its measured. a rifle barrel is a tube with grooves cut into it. The grooves are called, well grooves, and the high points (where no groove is cut) are called the lands. So the bullet...
Type: Posts; User: Danger Mouse
to do with how its measured. a rifle barrel is a tube with grooves cut into it. The grooves are called, well grooves, and the high points (where no groove is cut) are called the lands. So the bullet...