Don't overthink this, this is very basic. Don't get confused by the words rotated or swinging or hitting, the question was regarding the pressure points location not it's action. For most a strong single action grip is by far the best choice and is mandatory in homers basic motion acquired motion and total motion curriculums. If you go to any tour event one thing that will stand out with nearly all their swings is their trigger finger grip with the first fleshy pad of the right index finger (pressure sensing pad) on the back of the shaft.
Don't overthink this, this is very basic. Don't get confused by the words rotated or swinging or hitting, the question was regarding the pressure points location not it's action. For most a strong single action grip is by far the best choice and is mandatory in homers basic motion acquired motion and total motion curriculums. If you go to any tour event one thing that will stand out with nearly all their swings is their trigger finger grip with the first fleshy pad of the right index finger (pressure sensing pad) on the back of the shaft.
You should see the bronze casts done of the grips of memorable winners of the Open that are displayed at the R&A museum in St Andrews. Trigger fingers all.
The pressure point does Rotate though for the Drag Loader . He or she does load the knuckle at the base of the index finger during Drag Loading, Startdown, Longitudinal Acceleration ...assuming thats what attaches to the top of the handle. Then it Rotates to the first joint or pad (if that whats attached to the aft) during Radial Acceleration.
The Drive Loader just employs the first joint or the pad if you want . Ted hits but drag loads instead of drive loads most often so he's loading the knuckle in STartdown then Drives hard with a Right Arm Throw during Radial Acceleration.
The location and/or movement "feel" of #3, is related to hinge type. Because the #3 "senses" the shaft on the angled plane but the back of the left hand (and therefore the grip unless you asjust your grip during the swing) maintains its relationship to the associated hinge. Therefore, only with angled hinging will #3 remain in one "feel" location, behind the shaft, because the clubface retains its relationship to the angled plane.
Which leads to why angled hinging is "best" for hitting and Horizontal hinging is best for swinging, but thats another story.
At address the location of the #3 pp for hitting or swinging using a strong single action grip is the same, on the back of the shaft, perpendicular to the line of the wrist cock this doesn't mean it's going to be exactly at any angle it depends on your left hand impact location. The action of the #3 pp differs from swinger to hitter but both are in the same location at address. the violinist also uses the number three pressure point as he senses the strings angle and pressures.
It'll be located at the lowest point of contact between hands and club , aft of the direction in which the club is travelling. It senses inertia. And is located at the top of the LCOG, the Sweetspot Plane in other words . If you gripped the club cross handed, during Radial Acceleration it'd be located somewhere on inside of the tip of the left index finger.
During a Lagging Takeaway you sense the Lag at the lowest point of contact between the inside of the right hands index finger or thumb and the fore (as opposed to aft) of the handle.... a reverse #3 is you will. The fore of the handle is now aft of the direction in which the handle is moving in Startup... If you know what I mean. Dang .