The problem I had for many years was recoil anticipation. The best thing I ever did was buy an old Ruger MK I and have it suppressed. I got lots of cheep trigger time and learned to shoot much better. Im not saying that the suppressor was unnecessary but it certinally helped. I found that I was forcing the muzzle down before the shot in anticipation of the recoil.
"I ask, Sir, What is the militia?" "Its the whole of the people. To disarm the people is the best and most effectual way to enslave them" -George Mason Co-Author of the second amendment.