Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
ok didn't actually mean to publish this build yet, its still a work in progress so bear with me on this one. I'll get it finished as soon as I can.
Caitlyn can be an extremely fun champion to play once you get the hang of her, this build is just the way I play her and may not fit your playstyle so keep that in mind when trying it. The first thing to know about Caitlyn is the fact that she is extremely squishy. In order to do well with her you have to work on survivability, you have to have good map awareness when playing her. 90 Caliber Net is an extremely useful tool to get away from bad situations, use it to put space between you and the enemy or hop a small wall to ensure your safe escape. I rarely use it to attack since its knockback sends you in the opposite direction of your target. To increase my chances of escape I take Ghost and Flash as my summoner abilities. These three things along with a well placed Yordle Snap Trap almost always ensure your getaway.
I choose to optimize damage from her criticals and boost her mp5, the increased crit damage really makes her headshots hurt, and she is very mana dependant so the mp5/level helps keep you in the lane longer.