Bullet Drop Gangsta style

[muddywings]

I want to learn how to shoot gangsta...ok, just kidding. But I would like someone to confirm my understanding of POA/POI as it pertains to rotating a rifle 90 degrees-say shooting under a V-tac wall. I asked this a while back at the range but old age has caused it to slip out of my brain
Example:
AR15, 1x4 scope (lets say MTAC with a BDC), zeroed at 100 yards
rotating the rifle 90 clockwise
Reasoning/thought process:
holding the rifle non-gangsta, the bullet rises till it goes through 100 yards, plains out a bit through 200 then starts it's hard drop due to gravity being a bitch
turning it 90 degrees to the right will cause that 'rise' to cause the bullet to just go to the right
but gravity still being a bitch, will cause the bullet to fall to so now there are two factors at play (assuming Mr. Wind is quiet today)
POA/POI:
By my crude logic, if I'm going to hit a target at 100 yards, I need to hold upper left. yes? no?
Left because the bullet is being sent to the right and upper part of the target because the rise of the flight path has been taken out due to the rotation.

Where am I wrong?

I thought this would be a good place to ask this question. Happy Monday!