User blog:Dandalore/Haki?

Ive got a couple questions regarding Haki, and I thought I'd do it as a blog post, rather than post it on the talk page, Im not sure why.

First, do you think Benn Beckman has Haki? Is that why Kizaru raised his hands at him, in episode 488? Or was he just humoring him?

Second, those with Haki, can they use it in a gun? Example: Would a bullet injure a Logia user if a Haki user shot the gun and used Haki?

Third, it seems every single powerful person in One Piece has Haki, does Haki come with enough experience and intense training?

any answers would be extreamly helpful!!