WINCHESTER PDX 1 DEFENDER .308 WIN.
Concerns related to overpenetration could be addressed with ammunition selection. For example, the Winchester PDX 1 Defender load in .308 Winchester, featuring the Split Core Technology 120-grain bullet, comes to mind. The Winchester Split Core .308 has a forward section where the lead core is not bonded to the jacket. This is done to enhance rapid and massive expansion.
The lower portion of the core is welded to the jacket to hold the bullet together, even when the nose section opens violently upon impact, thereby dumping energy into the target and making sure the round does not overpenetrate a soft target (such as a human adversary). This Winchester offering could prove a favorite load for law enforcement, civilian personal defense or for any department or person wanting the ballistic advantage of the 7.62x51mm/.308 Win. while minimizing concerns of overpenetration.
Ballistic gel demonstrations witnessed in person and also via the Internet indicate that the Winchester .308 Split Core comes to rest after 12 to 14 inches of travel.