I have had one sanctioned 300 last October. I used a Brunswick Fury pearl and had tremendous carry that night. From my experience having several 280+ games helped me out tremendously. I remember the dead silence of the house and thinking "Dont mess this one up." Fortunately I carried a light hit and the rest is history. I have found that putting your mind in the right place will allow you to make a clutch shot much more routine. Most people are nervous and that is completely understandable it's a pressure situation, so if you are throwing for a 300 most times it's not by accident i.e. you threw 11 good shots to get there. So get up there and make another one. Just my input, good luck!