Help with flinching the trigger

[Cali-V]

Make sure you maintain a firm and commanding grip...
If your grip is weak, you are much much more likely to flinch...

[Ultimate]

I have noticed that if you focus on the front sight. You will catch yourself on the flinch. Dont look at the target.... look at the front sight post. Also what platform is your .45? I shot one in a Kimber Custom II and it was tame as a kitten with a beautiful trigger. Some guns have really creepy triggers that really allow you to flinch because after you have staged the trigger they moved back quit a bit more still before break. Others have overtravel which causes one to smack the rear of the trigger guard area and throw our shots off. So work on your flinching by concentrating on the front sight then see if your guns trigger can be made to be acceptable affordably.

[DasBoost]

Dry-firing has helped me a lot and having a friend load snap caps into mags at the range helps too; the latter makes the flinch visible and it kind of snaps in you and the dry-firing helps with trigger pressure and pull. Good luck.