Having a pint at an English pub is an occasion governed by rituals many hundreds of years old, even down to the most obscure details such as how one holds one's mug. The mugs come equipped with handles, but it's considered poor form to use one-possibly because Sir Walter Raleigh or William Shakespeare never did. So, years ago, when I first grasped a mug of English ale, a local politely but firmly corrected my grip. "The handle," he intoned, "is there not to be held." So it is with shotgun beads: They're there not to be looked at. Instructors call them "miss-me" beads. Aim with the bead and you can kiss the target good-bye. So why do shotguns have beads at all?