User blog comment:Kazanshin/Oda Nobunaga vs Hernan Cortes (Special Battle)/@comment-35680048-20180706170351/@comment-27358240-20180707010713

I unfortunately couldn't find direct evidence of Nobunaga himself using the 30 pounder. However, I did find that Tokugawa Ieyasu used 33 pounder and 41 pounder cannons, and that 18 cm cannon round (roungly 42 pounders) were active during the Sengoku period. I have links, but do you understand Japanese? If not, I can provide a translation myself.