A thin layer of baked clay covers the spikes and jagged ridges covering this specially designed bullet. A proficient user knows how to crack the clay (a free action) so that it peels off from either the spikes or ridges when fired, dealing either piercing or slashing damage.
Pathfinder Player Companion: Halflings of Golarion
Pathfinder Player Companion: Halflings of Golarion. Copyright 2010, Paizo Publishing, LLC; Authors: Hal MacLean and Amber E. Scott.