From Beretta:

For those of us who have been shooting for quite a while and in high quantities, improvement can sometimes elude us, especially if we get burnt out. As a new shooter, there is a lot of room for improvement, but as an experienced shooter we sometimes struggle to gain that extra bit we need to get to the next level. As you get to the highest levels in a shooting discipline, you’ll find that the things you need to improve on are very refined, and the concepts that you have been practicing for a long time aren’t sufficient to get you to improve.