For over 30 years most manufacturers of defensive ammunition have sought to meet the FBI's standards for penetration and expansion. This includes penetration and expansion after passing through barriers. I linked to this information earlier in this thread, that is what the criteria are.
We can go to websites to see what bullets are built to do that. You can go to Brassfetcher or LuckyGunner and see results. As well as other places.
Point being most ammo for defensive purposes does this. Meets the standards or comes very close.
Most ball ammo penetrates very well.
The Buick O' Truth that I linked to earlier, shows 22 l.r. jacketed ammo penetrating windshields.
Car and truck doors these days are most often not steel but plastic, aluminum and very thin steel alloy.
tipoc
We can go to websites to see what bullets are built to do that. You can go to Brassfetcher or LuckyGunner and see results. As well as other places.
Point being most ammo for defensive purposes does this. Meets the standards or comes very close.
Most ball ammo penetrates very well.
The Buick O' Truth that I linked to earlier, shows 22 l.r. jacketed ammo penetrating windshields.
Car and truck doors these days are most often not steel but plastic, aluminum and very thin steel alloy.
tipoc