What you put forward hasn't been the case for years. Bonded core premium bullets deflect a little, but not near as much as you claim. 308 rounds and 223 rounds deflect almost "0" after passing through windshield glass. Handgun rounds deflect a small amount, but not enough to cause a miss on the target if the officer shoots center mass and the bullet actually would've hit where he was aiming, absent the glass.
