When I was a new shooter, I obsessed over putting every round I shot into the bullseye (ok, sure, I still do!), but ... it is very important to understand the difference between self-defense accuracy, or "combat accuracy," if you will, and putting rounds in bullseyes. The adrenelin is pumping, everything is a blur, you are afraid, shocked and scared for your life....the goal is to get rounds into center mass. To put it bluntly, putting as many holes in the center mass of an assailant is the BEST WAY to stop a threat. Obsessing over trying to get all the shots into the same hole is actually going to slow you down in a self-defense situation where the goal is always: TO STOP THE THREAT. Here's a video explanation of the concept. Simply put, if you are getting rounds into a center mass area that is about the size of your open hand, or thereabouts, you are doing just fine. VIDEO HERE.