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The list of cannons by caliber contains all types of cannons through the ages listed in decreasing caliber size. For the purpose of this list, the development of superguns can be divided into three periods, based on the kind of projectiles used: *Stone balls: Cannon of extraordinary bore, which fired stone balls, were first introduced at the turn of the 14th to 15th century in Western Europe. Following a logic of increasing performance through size, they had evolved from small handguns to giant wrought-iron or cast-bronze bombards within a span of just several decades. *Iron balls and shot: By the 16th century, however, a general switch from stone balls to smaller, but much more effective iron projectiles was in full swing. This and the parallel tendency towards standardized, rapid-firing cannon made the enormously costly and logistically demanding superguns soon obsolete in the European theatre (with the exception of the odd showpiece). *Explosive shells: In the industrial age, artillery was again revolutionized by the introduction of explosive shells, beginning with the Paixhans guns. Breakthroughs in metallurgy and modes of production were followed up by new experimentation with super-sized caliber weapons, culminating in the steel colossi of the two World Wars. In the post-war era, the development of extremely overpowered artillery was gradually abandoned in favour of missile technology, while heavy guns are still demanded by various arms of the service. As artillery pieces of the different periods, due to the dissimilar characteristics of their projectiles, are practically incommensurable in terms of their bore size, the following list is split into three sections. == Cannon by caliber == 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「List of the largest cannon by caliber」の詳細全文を読む スポンサード リンク
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