How many headshots do you normally get per target?

[Mr.Dubstab]

1. Have feeling with your weapon. Take in mind how bad the recoil is.
2. Pay attention to the movements from the enemy throughout the game. Jumpy type / Walk type / Crouch type.
3. Headshots depend on experience. How high do you need to aim around the corner to aim for a insant (normal hight) head.