The school focuses on the skill of shooting the gun with a large diameter of the mouth of the guns, such as mochi zutsu (guns provided with their own money) held by those at the samurai class or above, ozutsu (Japanese artillery), and so on.
士分以上の持筒（もちづつ＝自費装備の銃）や大筒等の、口径が大きいものを撃つのを得意とする流儀である。