I have found in previous testing that most any 1-ounce 'Foster' slug will penetrate barriers fine... almost as good as the Brennekes, in fact!!! However, in tissue/gelatin, the Brennekes penetrate deeper.
I tested 4 different 9mm 147 grain HP's against the car door, and all 4 penetrated all the way through with no trouble. I did not have them go into gelatin after the door, though. However, the door does have 2 layers...
BTW, what do all of you think of Federal's 'Flight Control' Buckshot loads? I would NOT want them for home defense.
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