My brother actually said this and felt that it would not effect the person's hand. He said, theoretically, if a person were to move their hand from the side of the bullet (so as to slap the bullet) , at the same speed as the bullet, the bullet would would change its direction and the hand would be left unharmed. I feel that the bullet would graze the person's hand, while it is in contact with the bullet, also the speed of the hand does not need to be at the same speed as the bullet to cause it to change direction, it would require a certain amount but not exactly the same as the bullet. Which one is right and why? also here is a picture I made in case I could not explain the problem properly: http://imgur.com/ceATo5d Thank you!