8 rounds of buckshot, used in the M1014 or Remington 870 (Flashlight). Each round contains 8 pellets that scatter when fired, each dealing 2000 damage. They travel as far as the slugs, but past 40m, the pellets have spread too much to be a reliable source of damage. You cannot merge depleted piles, and you cannot use the 8 round magazine in the Double-barreled Shotgun. However, they can be converted into 4 2Rnd. Pellets by right clicking them and choosing the split option.
If given the choice between pellets or 8Rnd. Slugs, slugs are always the better choice. Pellets are ineffective past 40m, putting the player at a significant disadvantage in many engagements. However, at closer ranges, like the insides of buildings, pellets can be used to get multiple kills or headshots with a single shot.