04-21-2012, 09:03 PM
Glass penetration is something looked at and relied on with the .308, although a hostage scenario in a bank proved fatal for many hostages after an LE shooter tried to hit the perpetrator through the window. It would be important to do side-by-side tests with Grendel loads and .308 to see if there are any short-range advantages with the Grendel and certain bullet weights, versus the .308. I think most agencies have addressed this with bullet construction, at least for the ones who have addressed it at all.