Because you killed them?

The Berger is a very effective bullet.....just not for the reasons you think. I appreciate the fact you watched the video on the Berger website and are parroting much of their advertising hype which when taken in context is basically true...I'm just not certain you understand the total context. The Berger creates a wide wound channel because of the fragmentation and it creates a pear shaped temporary wound channel because of its rapid initial expansion and fragmentation. That doesn't make it any more deadly but for most North American game, it is effective. Whether a bullet hangs on the far hide or passes through is really no measure of its effectiveness. It's what it's doing as its passing through that matters.

The Berger shines at long range because of the velocity it retains.