Good question — there's actually a well-documented routine for exactly this transition (rifle stand → mounted position → NPA check), and it's a common technical gap.
The core routine, as taught by ISSF-level coaches:
The recommended sequence is to pick the rifle off the stand and go through your normal routine up to the point right before you'd start settling on the target. At that point, rather than closing your eyes, you shift where your eyes are looking without moving your head — this checks whether the rifle's natural rest point matches where your eyes/head are already oriented, isolating position error from visual correction.
This matters because NPA is the combination of a balanced, low-tension stance and consistent rifle setup — if you repeat the same setup at the firing point, the rifle will always point to the same place. Coaches recommend doing a full NPA check at the start of a session to establish your baseline, then a lighter NPA check before every single shot in the string, adjusting as needed rather than muscling the rifle onto target.
How the correction should be made — this is the most consistent point across sources:
Multiple coaching sources agree on the same principle: don't fight your natural point of aim by adjusting the gun with muscle — instead adjust your stance so the rifle points directly at the target on its own. Practically, this is almost always accomplished by moving the feet, and once NPA is found, the feet shouldn't move again until you're done firing on that target.
For standing specifically, the feet do double duty: the left foot generally stays fixed while the right foot is used to fine-tune the aim on target, and the stance itself acts as the pivot point for horizontal correction, while extending or pulling in the left hand along the stock adjusts for vertical differences in target height.
A caution for coaching younger/newer shooters:
One CMP training note is worth flagging if you're working with beginners: fine NPA adjustments — small shifts in rifle height and horizontal position — should only be introduced after hundreds of dry- and live-fire repetitions of the basic stance; new shooters should first just learn to bring the sights onto target with a consistent foot position, not chase fine NPA correction too early.
One more practical detail — speed of settling:
Practicing the stance repeatedly builds muscle memory, which helps a shooter settle into position quickly — and the faster the settle-to-shot cycle, the better results tend to be, since spending too long hunting for NPA causes tension to creep in and pull the shooter off target.
How this fits your lesson plan: This maps almost exactly onto the “Drill: NPA Reset Between Shots” I built into your standing plan — the sequence there (settle → close eyes/breathe → resettle → recheck without moving arms) is the same core mechanism these sources describe, just using eyes-closed instead of eyes-open/head-still. Both work; some coaches prefer the eyes-open version because it more closely mimics actual shot conditions. Want me to add this as an explicit “rifle stand to position” checkpoint at the top of the standing lesson plan?