I had the same issue when I first started shooting. slight pressure with my support thumb fixed it. now its automatic
The more I think about it, I think your suggestion is very good, along with finger pad placement and squeezing GENTLY right at the break. I'm obviously torquing the gun a tiny bit during the trigger pull. This bad habit slowly developed over the past year or so.
If you extend your arm, stick your thumb and forefinger straight out and point like your holding a pistol, then squeeze your trigger finger , look very closely. Natural tendency is for the hand/wrist to slightly bend to the left (for righties).
The trick is to consciously squeeze your trigger finger STRAIGHT BACK so your knuckle extends out, thus keeping your whole hand straight. Another poster mentions using your support hand to correct for this also, which in theory sounds true if you have a strong support hand, but you would then be essentially adjusting with both hands, instead of moving neither hand, if that makes any sense. You should be actually gripping the pistol more with your support hand and merely pulling the trigger with the other anyways
It is best to have to the correct trigger press down though, to practice A LOT until the correct straight back press becomes thoughtless muscle memory. I went through this myself. It may feel a bit unnatural at first and actually get a slight cramp in your finger after practicing, but I’ve had great results showing this to others who shoot left
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