Effects of 9mm & .45 ACP Through a Windshield - TheFirearmGuy
This expert-level analysis from TheFirearmGuy details the effects of 9mm and .45 ACP rounds fired through a vehicle windshield. The testing, conducted by an experienced instructor, reveals that a standard windshield offers negligible protection against these common handgun calibers. Both 9mm 115gr hollow points and .45 ACP 230gr hollow points penetrated the glass with minimal deflection, impacting a mannequin positioned behind it. While the .45 ACP generally created larger wound channels and more dramatic facial damage on the target, the overall conclusion is that neither caliber is significantly impeded by a windshield, rendering occupants vulnerable.













