One technique you can do to help your shooting/ Take a shotgun..check the chamber of course. Stand in a room as if you are getting ready to shoot a bird and pick a light switch on the wall. Bring the gun to your shoulder smartly as if you are going to shoot . Don't try to point the gun at the switch..just let it happen. See where you are pointing..dismount and do it again...50 times a day 3 days a week. After a while the gun will come up smoothly and it'll be pointing right at that ol switch. Doing this will make sure the gun goes to the same place most every time and you'll know it's either right or wrong. Your eye is the rear sight on a shotgun after all and it needs to be in the same place every time. BUT as I said...don't look at the gun as you bring it up....look at the switch. If you don't you'll find yourself bringing the gun up and then swinging it to the point of aim. Point of aim is all you look at. Eventually the gun will go right to that point. I was taught by one of my combat instructors lo these many years to use the same technique for combat situations with a handgun. I can still hit a 12x12(minute of crook) target with one of my 45's 6 out of 7 using that technique...quickly at 15 yds...most of the time
and I'm a terrible handgun shooter
BTW did ya ever notice that you make great shots on the birds you don't have time to think about...That little thing 'tween your ears just does it all for ya.