d20: do some gun spinning
Vash perks up at the request. "Aw-- you sure? S'nothin' special, honest." But he's already at the range anyway, Colt strapped to his thigh- so what the hell. Why not?
Idly, the revolver gets pulled out of his holster, cylinder flipped open and double checked even though Vash has always taken it upon himself to know exactly how loaded the gun was at all times, which chambers were loaded and which were not. It's then slide back into the holster, Vash's hand hovering above the grip.
A breeze gently rolls through; as soon as it stills, the Colt gets pulled out of its holster and tossed up into the air above his head in one quick, fluid motion, spinning as it does so. It's caught without looking, goes on to continue spinning around his trigger finger, only pausing for a fraction of a second to fire at the target down the range, aim landing dead-on.
A twist of the wrist and then it's spinning horizontally, Vash's body along with it, whipping around at the waist to fire again-- the holes overlap, leaving the vague outline of a tiny figure eight, far enough away to be difficult to entirely perceive.
Finally, it's tossed backwards from his hip, only to continue to flip up and over his shoulder-- caught again, the bullet fired, completing the small triangle at the target's bullseye.
... Only for Vash to completely deflate as the gun finally finds home again at his thigh.
"Ah, I didn't mean to... ah-haha. Y-y'see, I got hired a few times to make some cash doin' trick shots, so I've gotten some practice in, s'all. Just muscle memory from doin'' it so many times." And usually he'd remember to try and fire off-center, at least... !