I will second the idea of "calling the shot".
What that amounts to is getting a mental picture of exactly what the sights looked like on the target when the gun recoiled.
From that,you predict where your hit will be on the target.It is an excersize in focus and concentration.
One important benefit,it insures your eyes are open as the trigger breaks.
Very often,a bit of recoil anticipation,or noise anticipation occrs with that last part of tripping the trigger.Calling the shot is a way to cure it.You might try letting a friend load your rifle,and one time leaving it empty by surprise.That can show you if you are flinching a bit.
If you are using iron sights,realize you must focus on the sights,and concentrate on keeping the sight picture as perfect as possible.