Katchoo . . . knows how to not shoot her own limbs off with a handgun. Canonically she owns one, and presumably she knows how to use it, but since that's all a little fuzzy and she's certainly no Becky the Gun Girl I'm just gonna say she knows how to handle the thing. Her actual sharpshooting ability may not be so hot.

Let's just say good chance at the general target area, but light-years away from being able to shoot the buckles off someone's suspenders or something like that.