Germans had 406mm arty, too.
40.6 cm SK C/34 gun - Wikipedia, the free encyclopedia
Does this one count (800mm): http://en.wikipedia.org/wiki/Schwerer_Gustav
according to Wiki 2 were built
40.6 cm SK C/34 gun - Wikipedia, the free encyclopedia
Does this one count (800mm): http://en.wikipedia.org/wiki/Schwerer_Gustav
according to Wiki 2 were built
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