i just bagged another plane. this time with the 3.7 cm. yes they do explode. im not sure if it is proximity (like the american shells) or timing but they do explode. i got one in like right under the belly of the hurricane from about 1000 meters away. i nailed another with the dual 2 cm.
my new strategy is to use the dual 2cm when they're strafing and a little afterwards, then use the 3.7 cm once they're at about medium range away from me. if i find out how to paste images, then ill show u my last patrol report (like 5 or 6 hurricanes downed

)