Design and Development
Designed and built by Krupp AG to compete with the Rheinmetall 7.5 cm Pak 40, the Pak 41 was intended from the onset to take advantage of the Gerlich principle to increase shot velocity. In addition to its squeeze bore design and use of a tungsten core flanged shell, the Pak 41 incorporated several novel features. One feature was that the barrel was split into three distinct sections: the rear part was parallel-sided and conventionally rifled; the central part was unrifled and tapered down; at the muzzle end, the last 27.6 inches (700 mm) it was parallel-sided again but remained unrifled. Another novel feature was the attachment of the split trail legs and solid rubber tires directly to the gun shield to save weight. The gun cradle was set inside a special ball mount attached to the gun shield. The cradle itself was cylindrical, covering the whole of the rear half of the barrel.
The weight of the powder charge fired is 95 percent of the weight of the projectile. With an estimated velocity of approximately 1200 m/s (4,000 f/s), and a penetration of 15 cm (5.94 inches) of homogeneous armor at 900 m (1,000 yards.) The reinforced breech is of the vertical wedge type, with a semi-automatic action. Compared to the PaK 38 and the PaK 40, the appearance was long, low, and sturdy.
The gun is sighted up to 1,500 meters; the sight has four scales for use according to the actual muzzle velocity of the gun. The barrel life is provisionally estimated as 500 to 600 rounds.
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