Quote:
Originally Posted by ScottJ
Don't forget that the 9MM is a taper case while the .380 is straight wall.
So the .380 round might headspace against the taper well enough that the extractor can hold against the firing pin but the case head will most likely be lacking in support. I suspect any .380 brass fired in a 9MM chamber suffers bad case head expansion.
|
Every time I have accidentally shot a .380 in my 9mm Paraord, it split the case.
I don't do it intentionally, because it risks damage to the extractor. In an emergency the .380 will fire.