You can concentrate an immense amount of magic to create a piece of ammunition that phases through everything but your target.
Archetype
Magical
Feat type
Archetype Feat
Level
16
Traits
Archetype, Magical
Prerequisites
Eldritch Archer Dedication
Frequency
once per day
Actions
1 action
You can concentrate an immense amount of magic to create a piece of ammunition that phases through everything but your target. Make a bow or crossbow Strike against a foe who is observed or hidden to you (but not undetected). The ammunition travels to your target in a straight line, passing through any non-magical barriers or walls in its way, though magical barriers stop the arrow. The shot ignores all cover, the concealed condition, the hidden condition, and circumstance bonuses to AC from shields. It has a +4 status bonus to hit creatures wearing any type of armor. The Strike's damage can't be reduced with a Shield Block reaction using a non- magical shield.
Source: Pathfinder Player Core 2, p. 199
Bring Incorporeal Shot into a Pathfinder 2e game with The DM Screen.