I saw a guy once that deliberately mounted his scope 90 degrees out because the windage turret was in the way of ejecting cases. I helped him get it sighted in and he went away happy. He wasn't planning on playing with the sight-in any more, anyway.
Did that on a M788 to avoid drop-backs. Worked very well; helps to be somewhat spatially inclined for sighting in.
Sometimes, the air you 'let in'matters less than the air you 'let out'.
