From the Winchester Press release:
Winchester® Ammunition’s Supreme Elite™ Bonded PDX1™ line generated a lot of attention in 2009. To continue meeting the demands of consumers, Winchester has extended the Bonded PDX1 line by offering it in .380 Automatic and .45 Colt for 2010.
The Bonded PDX1 line uses the same technology the Federal Bureau of Investigation uses as its primary service round. The Bonded PDX1 is engineered to maximize terminal ballistics, as defined by the demanding FBI test protocol, which simulates real-world threats.
Symbol Line Grain Jacket
S380PDB .380 Auto 95g JHP Bonded
S45CPDB .45 Colt 225g JHP Bonded
FTC stuff: I received nothing from Winchester for this post, I’m just printing a press release. Anyway, if you’ll recall a couple of weeks ago, the post from ENDOTactical that had the Winchester Ranger penetration/expansion diagram – the bonded rounds performed much better when fired through barriers than the non-bonded rounds. Introducing a .380 in the “bonded” format will provide another option for the literally hundreds of thousands of shooters that rely on the .380 for their defensive pistol.