practice the breathing part.
With a 22 or 223 try this,
take 3 or four deep breaths, concentrate on In your nose out your mouth, (Got this from my wifes pilats
On th fourth be ready to take the shot mid breath. you should be on target and in the middle hold your breath, no more than 5 sec to break the shot. If you cannot get it off in the 5 sec, just take another breath.
Break the shot and exhale, rack the bolt and be ready to take a follow up shot on the next breath in the middle.
I shoot about 5 shoots then break. If you practice the muscle memory will take over during stressfull times.
Just another trick, if your cross hairs get blurry during the breathing, on the breath you are going to shoot, right before the pause without breaking the check weld shoft your eyes off the scope and look back. Your eyes start starving for O2 when focused on one object to long. It should clear the cross hairs right up for when you break the shot.
Just the little things that have worked for me, Not an expert and do not claim to be!