In episode 7 of Gun Myths from Kalashnikov Media, they check if 9mm rounds of the MP 40 SMG of Nazi Germany can be deflected by Red Army Winter Coats... "We continue to check the main gun myths. Today we will find out whether the bullets of the German submachine gun MP 40 of the Second World War can’t shoot through a soviet 'Telogreika' jacket at a distance of 100 meters."