Crazy Self propelled Howitzers from 75 to 420mm Caliber Size Comparison 3D

2B1 Oka Transformer has arrived ! This Russian Howitzer Had a Bigger Gun Than Iowa-Class Battleships. 2B1 Oka (Russian: 2Б1 Ока) is a Soviet 420 mm self-propelled heavy artillery. The Oka used a T-10 heavy tank hull as a chassis. Its 20-meter barrel allowed it to fire 750 kg rounds up to 45 km. The rate of fire of the gun according to technical specifications was 12 shots per hour. 𝗙𝗘𝗔𝗧𝗨𝗥𝗜𝗡𝗚 Semovente da 75/18 Bishop Cromwell VI StuH 42 FV433 Abbot SPG M7 Priest Wespe M108 Howitzer Type 74 105mm AMX-10