Yes, when you shift the aperture right, the strike of your round should shift rightward.
Presuming your Troy rear is the same as mine: It'll have a movement indicator on the right side, just above the adjuster itself. There should be a letter "R," and an arrow that indicates turning the knob clockwise will shift the strike rightward (because that moves the aperture rightward, as viewed from behind or above the sight). Turn counterclockwise = strike of the round shifts left (aperture moves leftward).
The conventional wisdom is to tell folks to ignore which direction whatever goes when you turn whichever doodad....and to just follow the arrows to move your groups.
This is unlikely, but can be easily checked, if for no other reason than to eliminate it as a possibility: Is the rear
actually moving when you crank on the adjuster? Can you see it shift in either direction, preferably both directions? If it's NOT moving, would fit the symptoms, and is easy to fix by trying another rear (...or, as suggested, a known-good optic). Many of us have run across dead adjusters on optics, and while I've never seen that occur on an iron rear, it's still possible.
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