Similar to my tests and my rack of plates I made for my boys in Corrections. The rack had 6 plates on it, which were adjustable to 'power factor'.
I had them set so a 9mm 115gr. within an inch of the top, would knock them over, 1100fps with 115gr - 126 PF. A .38 SPL 158 at 850fps - 134PF hit in the middle would knock them over, but the 9mm would not.
My .45 with hard ball - 195PF would knock them over with a hit anywhere.
My 300gr.FN load with blue dot at 770fps - 231PF, and hard enough that some would re-set.
The reduced 300gr. FN at 650fps would as well having a PF of 195, same as Hard Ball. It was fun - I'd be on the second or third plate when the first one fell over - the sounds were way behind the shot.
Fun stuff this plate shooting.