This study finds that, because of the gun and ammunition used, bullet deflection varies when penetrating a laminated windshield, but not enough to significantly alter the calculated location of a shooter. All of the rounds, with the exception of two, fell within the generally accepted range of negative five degrees to positive five degrees used in shooting reconstruction.
An Investigation of the Effects of Laminated Glass on Bullet Deflection
Wilgus, G.; White, J. B.; Berry, J. An Investigation of the Effects of Laminated Glass on Bullet Deflection. J. For. Ident. 2013, 63 (3), 226-232.