Federal’s new line of ammunition, Guard Dog is a unique, expanding full metal jacket that has a solid core outside, filled with a polymer inside. The bullet expands identically and reliably every time, without having a hollow point that can get clogged with debris or clothing and act like a full metal jacket. The design is meant to keep the bullet from over penetrating and hitting unintended second targets.

In this video Dave Maccar shows you how the bullet should look after impact.