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Having shot through auto glass (albeit not driving), being only 3-6 inches from the glass results in no notable deflection, depending on the range to the target. Windshields are laminate construction, sidewindows are generally tempered (why EMS prefers to pop a side window- the whole window cracks, not the localized area, as with laminate).

From the fairly famous (IIRC) LA jewelry store heist, where a SWAT sniper's bullet missed the intended target by ~4 inches. The incident resulted in LE across the country giving more serious evaluations of the 7mm Weatherby Mag and the .300 Win Mag (ultimately, "The Choice" for long range, insulated targets). Jeff Boyes, the sniper that fired, was ~100 yards away, and his bullet (.308) hit the glass panel door on, or extremely close to the frame, while it was swinging shut.

https://www.policeone.com/swat/articles ... -incident/

As seen here, it is done with the .556 NATO, a much lighter and frangible round, ultimetely to good effect.


Bottom line- the closer to the barrier, and the target, the less effect on the round. The farther from either the barrier, or the target, the more effect on the projectile (as the bullet surrenders energy to either gravity and air-deflection in travel), or it surrenders energy to a barrier early in its path, resulting in diminished range. So, with "combat ammo", inside 30 yards, shooting through your windshield with a service-caliber weapon is certainly do-able.

flowrie wrote: ↑Tue Jul 17, 2018 7:13 pm The deflection of the bullet by the windshield is unknown, so you have no idea where the bullets are really going.

Nope, and yep, you do.

Training issues noted:
1) He is uncertain whether or not to shoot through the windshield or side window, and is changing hands. Changing angles of fire is understandable, but he should know with which hand he is more accurate, forward-facing or cross-body, and not transition.

2) Hit the mag release with non-dominant thumb. Run it like you own it- there should only be a fractional change of firing grip (if that) to peg the mag release and drop the empty, with the controlling hand. Which leads to ...

3) Attempted to reload with mag backwards. The reload-hand, grabbing the mag, should "know" the orientation of the mag, from whence it comes. The fingers index the mag the same way, to the same place, in the same grip and motion, Every. Single.Time.

4) After reload, he assumes the old revolver grip, support thumb over firing hand. Not good. Worst case, you short-stroke the slide and have to do a failure-remediation. Mid-worst-case, you get a big slide gouge, running slick, slimy, blood all over your firing platform (hands and pistol). Best-case, you don't have maximal control of your weapon, resulting in increased muzzle-rise, diminished accuracy and slower shot-to-shot.

Not bad, considering the high pucker-factor, but could use some detailing.