I don't even think about where my finger goes when it is on a trigger.
I mostly trained for self defense pistol, long gun hunting, and military.
You're scared, out of breath, and adrenaline is pumping like nobodies
business.
Sight picture, breath control, don't jerk the trigger, is about all
you can do when your heart is doing 120, you are out of breath, and
shaking.
I'm a finger pad guy.