Caitlyn Ability (LoL): Ace in the Hole

Ways to dodge*
Abilities that turn a champion untargetable such as Vladimir's Sanguine Pool, Fizz's Playful, Fiora's Blade Waltz and Elise's Rappel will break the lock-on and/or dodge the projectile.
Or
Clones like Mirror Image, Children of the Grave, Hallucinate and Omen of Death.
Or
Zhonya's Hourglass OP?
Or
Good old trustworthy, "ID TAKE THE BULLET FOR YOU MAN!", "Well, let's find out!"

Sanguine Pool, Cocoon / Rappel, putting someone in front of you.

is there any way to dodge it?

Boom headshot!

While dealing massive damage it is pretty useless in team brawls.. I have intercepted her killing shot numerous times for allied champions... it may be OP but if the opposing team works together this ult is rendered almost useless.

it's perfect...rarely any champs gets "too far away" to use it...LOVE IT

Too much movement speed for her range. Rather OP, IMHO.

The recent buff makes this much more of a threat to fleeing champions. Very powerful.

good for stealing/catch fleeing ppl :)