Grip
SOM,
Your comment of "low left" would appear to say you are a right handed shooter...??? Low and left is usually an indicator that the shooter is "wanking" or jerking his shot...therefore moving his muzzle off the target and "low and left". Marshall Kane's suggestion and NOW mine is to cease with the live fire and concentrate on lots of Dry Practice....follow what he has recommended and work on your trigger control. There maybe a bit of trigger finger position in your problem, but for now, I need you to focus on TRIGGER CONTROL. If your weapon has any "slack" in it(that is trigger movement to the rear with no movement of the internal trigger mechanism parts). Then go to a safe and quiet location, anywhere in your home, preferably in the basement, put a 3" X 5" card on the wall with a 1" dia. black circle on it on the wall, about 6' high. Mark a spot on the floor approx. 5 meters from that wall. This will be your DP area. When you are ready, get into whatever grip and stance you prefer..Point in at the black dot(COM), focus on the front sight 110% and take any and all slack out of the trigger, when you feel "mechanical resistance" pause a second.then start SLOW steady pressure straight to the rear, until the shot breaks. While all this is going on....you are focusing and comcentrating on the FRONT SIGHT. Forget all else in the world....your attention is 100% per cent on the front sight. Now, this exercise is just practice to ingrain and learn the proper relationship of your trigger finger movement and the movement of your particular trigger as it relates to firing this weapon. You will need to devote many hours to the DP technique to get a ":repeatable swing"...alitle golf lingo there. In other words, you will need to be able to do this on "auotmatic pilot".. DP is the ONLY way you will be able to elevate your skills with a handgun...In your case "Shooting is bad for Shooting"...!!!
I have a book out called "Defensive Handgun Skills" which is available at Border's, B&N and Amazon.com on the internet. If you are truly interested in improving your handgun skills, then may I recommend you obtain a copy of it. ISBN # is 13- 9781440213816. It sells for $16.99. There are dozens of high quality photos showing each step of a particular technique.
Good luck with this project and if you have any further questions on this subject....you can PM me and I will gladly respond..