Borrowing technology from the highly successful X Bullet, Barnes offers an all-copper pistol bullet. This new bullet is sure to change the face of pistol hunting forever. The Barnes XPB pistol bullet will deliver more energy than any other bullet available for handguns. In testing, penetration has been increased up to 25% over lead-core bullets, while remaining intact to expand like no other bullet in the world.ATTENTION RESIDENTS OF THE STATE OF CALIFORNIA: These bullets are certified by the State of California to be in compliance with the California Lead-Free Ban and meet the criteria under the Condor Preservation Act.