well crap, they pulled my thread(I shouldn't have posted the entire article)
your test made me remember the first time I shot my Glock 23. Was out plinking with another buddy(he had a copy of an Army .45). We were shooting at a piece of old culvert pipe at about 35 yards. You could hear a clear gap between the time he fired and the impact. It was so noticeable that we were laughing at about it. FWIW he was shooting some cheap LRN reloads.
I was shooting some flat-point FMJ re-loads that I had picked up at a gun show. For the longest time I thought I wasn't even hitting the pipe. Turns out his bullets were splattering(somewhat expected)against the pipe and mine were penetrating it-through both sides!(completely unexpected!) And their impact was happening so much faster that we never could hear it...
I've ofter wondered how all the other available .40 S&W bullets would perform.
I also think as long as the enemy "insurgents" aren't willing to obey the Geneva convention, and until a more potent caliber is available, I see no problem with issuing our soldiers hollow points.
Why did they pull that thread? It was interesting and not really contentious?