rexford Posted April 28, 2003 Share Posted April 28, 2003 A Russian "Instruction on Fighting German Tank T-VI", published 20 April 1943 and referenced by John Waters, has penetration range figures for the subject gun against Tiger. It is stated that the 76.2mm AA gun, firing armor piercing rounds, can penetrate the Tiger side armor (hull and turret) and rear at 500m, while the 76.2mm field gun cannot penetrate at any range with the same rounds. It is a fact that the Russians often used their ARTKOM penetration estimates against face-hardened armor to estimate penetration ranges against tanks with homogeneous armor, like Tiger. If the ARTKOM equation in Miles Krogfus' recent AFV News article is used to estimate the 500m penetration for BR-350A APBC fired at 745 m/s, the 500m figure is 81mm. I chose the 6.3 kg BR-350A APBC round because the most common Russian penetration figures for 76.2mm APBC (69mm at 500m, 61mm at 1000m) are based on that round. This suggests that the 745 m/s muzzle velocity that occasionally shows up for 76.2mm Russian guns may be the AA gun. Based on a DeMarre estimate from the U.S. tests with 122mm APBC against medium hardness homogeneous armor, 76.2mm BR-350A fired at 745 m/s would penetrate about 83mm homogeneous at 500m. 0 Quote Link to comment Share on other sites More sharing options...
Stalin's Organ Posted April 28, 2003 Share Posted April 28, 2003 The Fact File series book on AA guns puts the M.V. of the 2 76.2mm AA guns at 813 m/s (Models 1931 and 1938) Inerestingly some of both were rebored to take 88mm ammo. 0 Quote Link to comment Share on other sites More sharing options...
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