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"High Caliber Beast Killers " Topic


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247 hits since 26 Sep 2018
©1994-2018 Bill Armintrout
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Tango01 Supporting Member of TMP26 Sep 2018 2:52 p.m. PST

"The acceptance of the KV-14 SPG, better known as the SU-152 "Beast Killer", didn't mean that further development of its design ceased. The use of an ML-20 gun-howitzer was, in a way, a compromise, and attempts to install more powerful systems continued. This article will discuss alternative armament for the heavy Soviet SPG: 203 mm howitzer and mortars. The SU-203 could have been one of these vehicles.

An intermediate type


The reason for searching for alternative armament is simple. During development of "bunker busters" it was assumed that they would use the high power Br-2 152 mm gun. This gun was chosen as the most powerful of all guns of this caliber used by the Red Amy. The most important thing was that the 53-G-551 concrete piercing shell could punch through up to 2 meters of concrete. This meant that bunkers such as the Finnish "millionnik" became vulnerable to SPGs. It's no wonder that the GAU tried to get a heavy SPG with this gun.


When designing his ZIK-20 SPG, F.F. Petrov had a variant with a reworked Br-2 in mind. The project, developed by the factory #8 design bureau, mounted a Br-2 barrel on the ML-20 mount. A massive two-chamber muzzle brake was installed. After factory #8 was split into two (factory #8 and factory #9) by GKO decree #2457ss on October 30th, 1942, Petrov continued his work, not as the chief of the factory #9 design bureau. The converted Br-2 was built as the experimental 152 mm D-4 gun…."
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