Alright I know a lot of people complain about how overpowered targetting is, but lets take a closer look at it.
First of all, it costs 1 grit point per use and you have to declare using it before your role. Ok, normal there but lets not forget that Gunslingers only have a maximum grit equal to their wisdom modifier. My gunslinger has a wis of 19 so that is 4 grit points per day. Recoverable through confirming crits and getting the kill shot on an enemy that is not helpless or much weaker than you. Also, an extra two grit if you take a feat. Since Dex is pretty much the most important score for a gunslinger, lets assume the wisdom is capped at 18 with 4 grit per day. That is 4 uses of targetting in one day.
Targetting is a full round action. So if the gunslinger uses targetting, they can not do anything else at all. In one session my Gunslinger got into a fight with a Great Cyclops. I used targetting to knock him prone. Next round he got up and beat the hell out of me. When asked why I did not move away after shooting him, I had to remind the others that targetting is a full round action.
So using Targetting while soloing pretty well dooms the gunslinger. Targetting is more for helping the rest of your party get easier hits as long as you are not planning on moving at all.
Yes, targetting does not have any Combat Maneuver checks, but this is offset with how much a bullet costs, chance for breaking the weapon on a 2 or less, grit cost, and being a full round action.
The excuse that I have heard the most is "Why can the gunslinger do it while my archer can not?" This is a terrible argument because each class has something the others can't do. Heck, an archer can't do that but they have cheaper weapons that are more common to find and are spending 10 gold for a pack of arrows rather than one bullet. Gunslingers need to conserve their ammo more and take better care of their weapons due to rarity, cost, and so forth. Also there are feats for bows that do not work with firearms. Plus bows and crossbows have the advantage of greater range than the firearms and they don't explode in your face if you fumble.
I am sure there are more reason I can give as to why this ability is not really broken but I can not think of them right at this moment.
