Originally posted by DREDIOCK
Dont remember which gu it was exactly though it was a cannon round. He said the Army Air corp decided not to use it but the russians adopted it and used it to great effect against tanks.
Yes, that would have been the Browning M4 37mm cannon that the P-39 carried. We never had access to the Russian guns.
Browning M4 37mmMetric Calibre: 37 x 145R
Projectile Type/Weight: HE/608g
Muzzle Velocity: 610m/sec
Muzzle Energy Joules: 113,00
VYa 23mmMetric Calibre: 23 x 152B
Projectile Type/Weight: API/200g
Muzzle Velocity: 880m/sec
Muzzle Energy Joules: 77,400
NS-37 37mmMetric Calibre: 37 x 195
Projectile Type/Weight: AP/735
Muzzle Velocity: 900m/sec
Muzzle Energy Joules: 298,000