[xander]

Based on articles by police and military in cold climates who learned that many layers of clothing can reduce the effectivness of 9mm rounds. Sorry you think it's idiotic, but apparently it's concern enough that many departments have chosen to go with pistols in .40 and .45 for that reason alone.

[yarddog]

I think you have a valid point but you have it backwards. A FMJ 9mm will penetrate thick clothing better than a .45 or .40.

I have even heard that is one of the reasons the Germans kept the 9mm instead of going to a larger caliber. A lot of their fighting was done in winter conditions and the 9 would go right through several layers of heavy clothing.

[bad company]

Based on articles by police and military in cold climates who learned that many layers of clothing can reduce the effectivness of 9mm rounds

Penetration is the advantage that 9mm brings to the table. Some gurus believe it brings too much.

many departments have chosen to go with pistols in .40 and .45 for that reason alone.

Which departments are going with the .45?