TargetTalk

Was playing with my trigger finger with different 3rd, 4th finger and pinky pressure.

The old Russian coach’s offshoot observation, grip with pinky to allow more trigger finger movement, did not work for me.

Gripping middle and ring fingers lightly and tightly, both have their idiosyncratic movements. Just supported, with no grip or little finger vise pressure, certainly has its jumpy moments.

Tried to shoot consciously and subconsciously.

What seems to work best is the con-comittant pulling of both trigger finger AND middle finger. Subconsciously and consciously, this two finger movement seems to give me best control. No chicken fingers with two fingers.

Anatomic control of those two fingers must be linked. Actually, I think, they are linked. With normal static middle finger grip and dynamic trigger finger movement, static middle finger must be squeezing ever slightly tighter during that trigger finger movement.

Why not just pull both fingers together, so you are not fighting yourself, if you can keep your hold/ aim, alignment steady during those coupled finger pull?

After the thumb, the index finger is the most controllable independently. The middle and ring fingers are somewhat linked, as is the ring finger and pinkie. It's pretty much impossible to point with your ring finger. What might me happening in your case is that doing what you are doing is increasing your concentration on trigger control; alternatively, moving both fingers forces you to move your index in a "cleaner" arc by your act of limiting its independence.