Someone told me once never to pattern a shotgun. I didn't listen to them and I patterned a gun I had just bought and it really messed up my head.
Yep, which shows just how easy it is to get in some shooter's heads and get a few birds on them. Oldest trick in the book. Some are easier to screw with than others.
My suggestion to you is to never check the fluid levels in your vehicle. Might cause you to get your mind completely off your driving, and have a wreck. Don't ever check your blood pressure, either. Might cause you to worry too much about it.
One reason a shotgun's patterns should be checked is to instill confidence in your gun. Confidence is a great aid to the best competitive shooting. NOT knowing is what "gets in MY head".
