Board Thread:Boruto Discussions/@comment-25319479-20160708115044/@comment-945885-20160711192825

It's hard to find 威 unpaired with other kanji, but when I looked it up in a Japanese dictionary, the definition was "the power to terrify an opponent" (相手を恐れさせる力), originating from a Chinese character that means "threaten."

As for -dan, well, I'm not familiar with 弾 ever being translated as capsule. Bullet, pellet, shell, cartridge, ammo, sure. Not capsule (which is カプセル) in Japanese. A capsule is a small container, not a projectile.

IIRC, the concept art for the Scientific Ninja Tool Gauntlet refers to the miniaturized scrolls as カートリッジ (cartridge), which once again evokes the idea of the device using the scrolls as ammunition that can be used to "fire" or "launch" a jutsu. I assume that "cartridge" is probably what Seel meant to say, not capsule.

As I take it, the scroll is the cartridge (casing), and the jutsu is the "bullet" that's being fired; a gun fires a bullet, not a cartridge. Hence "Suiton Bullet," "Raiton Bullet," etc.