You can make multiple called shots where others could land but one.
Benefit: Whenever you make an attack, you can choose to replace that attack with a called shot. You can make multiple called shots in a single round. Each additional called shot after the first made in the same round takes a –5 penalty. In addition, a called shot that deals half the creature’s hit points of damage (minimum 40) is a debilitating blow.
Pathfinder Roleplaying Game Ultimate Combat. © 2011, Paizo Publishing, LLC; Authors: Jason Bulmahn, Tim Hitchcock, Colin McComb, Rob McCreary, Jason Nelson, Stephen Radney-MacFarland, Sean K Reynolds, Owen K.C. Stephens, and Russ Taylor.