[lefteye]

It is just my opinion but I have thought for a long time that it is difficult to learn how to control the trigger finger "gently" while using the rest of the hand to hold the handgun firmly. Probably not much of an issue with a .22 such as a Ruger Mk I, II, III, etc. I suspect expert trainers know how to deal with this - basically teaching the brain how to control different parts of the hand differently. By "teaching the brain" I mean a "LOT" of practice with and without supervision.