Aimed Shot is a 2.4 cast time shot available to Marksmanshiphunters that deals ranged damage plus X. When fully talented, Aimed Shot has a greatly increased critical chance against high health targets, and has a chance to be made instant and free. It is the second highest damage shot available to Marksmanship hunters, after [Chimera Shot].
Improvements
[Careful Aim] increases the critical strike chance on targets above 80% health by 60%.
[Master Marksman] makes Aimed Shot part of your normal DPS rotation by making your next one instant cast and free when the effect is stacked 5 times.
[Piercing Shots] causes the target to bleed for 30% of the critical strike damage.
Patch 4.0.1 (2010-10-12): Became a prime glyph. Now grants 5 focus with Aimed Shot criticals (previously reduced the cooldown of Aimed Shot by 2 sec.).
When coupled with the Careful Aim talent, Aimed Shot is an excellent opener despite its long cast time, as it has an additional 60% chance to critically hit.
Past changes
Patch 4.0.6 (2011-02-08): weapon damage increased to 200%.
Template:Patched
Patch 4.0.1 (2010-10-12): changed to a specialization ability, cast time increased to 3.5 seconds, cooldown removed.
Patch 3.0.2 (2008-10-14): Mana cost has been reduced from 11% of base mana to 8%, casting time reduced from 2.5 sec to instant. Cooldown increased from 6 seconds to 10 seconds and damage reduced.
Patch 2.3.0 (2007-11-13): Added reduction of healing done to that target by 50% and cast time was reduced to 3 sec from 3.5 sec. The reduced healing effect does not stack with Warriors' [Mortal Strike] or with Rogues' [Wound Poison].
Patch 1.10.0 (2006-03-28): This ability now has its attack power normalized the same as melee instant attacks. This means that the attack power contribution from all ranged weapons will be the same, no matter what their speed. All weapons will contribute attack power as if they were 2.8 speed. Weapons slower than 2.8 speed will do slightly less damage than previously; weapons faster than 2.8 speed will do slightly more damage.
Fixed bug where Aimed Shot wouldn't cancel properly when the target moves out of range.
Patch 1.5.0 (2005-06-07): Special ability shots no longer add the ranged weapon speed or take into account ranged weapon haste when determining the actual cooldown. The tooltip and cooldown timers should now properly reflect the actual cooldown.
[Piercing Shots],
[Master Marksman],
[Careful Aim]
[Chimera Shot].
[Careful Aim] increases the critical strike chance on targets above 80% health by 60%.
[Aimed Shot]. 
