As interpreted by a non-professional using the "eyeballing it" technique. Sounds empirical.
At least I brought a picture - a informational and seemingly trustworthy one at that.
Its clear that there is a difference between popular auto ammo.
It doesnt matter if you think its important or not. The difference exists and its in the math.
I see the 40 as a advantage in pistols that I shoot well.
I'll take that advantage, whether it would matter or not.
This thread is about the PM40 vs the PM9 - some seem to have missed where I said the 9mm is my chosen round for the PM's (I own a PM9 and I dont think I'd care for a PM40.