I've had a Gen 4 Glock 19 for about 6 weeks now (my first handgun) and have put about 500 rds through it. I read up on both the "milking technique" and "thumbs forward" gripping techniques and went out to shoot 150 rounds to experiment with my grip. I made sure I was high on the gun and the best grip that felt like I was getting equal pressure all around included putting my index finger of my off (left) hand on the front of the trigger guard. I found, by doing this, I could put more of my left palm on the grip and get pressure there. My question is this: Is this a bad habit (to put your off hand index finger on the front of the trigger guard? Do I need to bring it down? Even though it led to tighter groupings, I do not want to continue using it if it is a poor technique or could lead to other problems. Thanks in advance!!!