![]() What design details motivates the three different performance ratings of the PaK39, the KwK40 and the StuK40, that all fire the same ammunition (identical projectile and casing that is) and, to the untrained eye, looks like the same basic weapon. Is the PaK39 somehow more closely related to the PaK40 than the KwK and StuK? So, how do these 4 guns related to one another? On paper it looks like the same gun as the KwK but, as with the PaK39, with a different mounting.ĬM rates this gun at 770 m/s with a penetration of 104 and 96 mm 100 and 500 meters respectively (30 degrees). It too fired the stubby ammunition (no doubt a good thing in those notoriously cramped enclosed SPG's). So, how come the difference in performance?Īnd the same goes for the StuK40 mounted in the StuG III and IV's. The PaK39 mounter in the Hetzer and PzJg IV? CM portrays it has having identical performance to that of the PaK40, yet it fired the same ammunition as the above mentioned KwK40 and the, soon to follow below, StuK40 and had, as far as I have seen, the same basic dimensions. In CM this guns is rated at 750 m/s with a penetration of 101 and 93 mm 100 and 500 meters respectively (30 degrees). It has a more compact breech, substantially shorter recoil and fires ammunition with a shorter and thicker cartridge case, the Pzgr.Patr.39 measuring 748 mm. In order to fit a weapon of similar capacity into the Pz IV tank turret the KwK40 was designed. In CM this guns is rated at 792 m/s with a penetration of 108 and 100 mm 100 and 500 meters respectively (30 degrees). This gun used ammunition with a long slender cartridge case, the Pzgr.Patr.39 measuring 969 mm in total. The PaK40 is the gun used as standard AT gun by the Germans, it was also mounted on many of the open topped Panzerjäger SPG's. What exactly are the differences between the German 75 mm guns in the L/46-L/48 range?
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