If you want to improve your pistol shooting accuracy at the range, consider implementing the following things as they apply (or not) to you personally in your shooting style.
1. While using 2 hands (more stability), make sure your 2nd hand isn't pushing the gun.
2. Using a spent cartridge, dry fire your pistol at the target and see if your trigger finger pull (some call it a press) is moving your pistol a lot (there's almost always a little movement but that's okay). Adjust by moving your finger to the left or right on the trigger to find that sweet spot where you can pull the trigger smoothly and move the pistol the least. For most people with this issue, they're using too much trigger finger.
3. Focus your aiming eye or eyes (some people use both eyes) on the front sight, not the target (which should be slightly blurry). If your shots are hitting all around the intended aiming point in a circle or so, this is the sign that you're focusing on the target, not the front sight.
4. Breathe normal, let a little bit out and don't hold your breath while pulling/squeezing the trigger.
5. When looking at your target, if you notice some rounds have hit real low, that's usually anticipation of the round going off. People with this problem tend to jerk the trigger fast to beat the recoil. This is super easy to detect if you put a spent cartridge in the chamber and then fire normally. You'll notice the pistol dip down (anticipation) just before you finish pulling/squeezing the trigger.
FWIW, these are the five most common errors I've seen while training cops for many years at the range. They're all fixable and almost everybody's accuracy improves when they focus on them. Then you work on speed.
