And Stay Back/Dead Money

And Stay Back is a perk in the Fallout: New Vegas add-on Dead Money.

Effects
While using a shotgun, there is a 10% chance per pellet that the shotgun blast will knock an enemy back. Note that this perk actually knocks down the enemy rather than sending them flying as the description suggest, similar to Super Slam for melee attacks.

The weapons affected by this perk are the same as those affected by the Shotgun Surgeon perk, namely:
 * Caravan shotgun
 * Hunting shotgun
 * Dinner Bell
 * Lever-action shotgun
 * Riot shotgun
 * Sawed-off shotgun
 * Big Boomer
 * Single shotgun

Bugs

 * As with the Shotgun Surgeon perk, this perk does not affect the sturdy caravan shotgun.