I drilled this ball 4 x 4 x 2 and my PAP is 4 x 11/16. I found that this ball rolled so smoothly and consistently. I used the ball on White #2 and Typical House Shot. I played 30 to 4 and 30 to 12. Both angles I found the ball to be amazingly the same. What I mean about that is when the Dare Devil tracked out to the 4 board she rolled smoothly and came screaming back to the pocket with truly amazing pin reaction and carry. When I tracked the ball to 12 she rolled smoothly and when she reached the break point she was not amazingly aggressive and uncontrollable I found her to be opposite. She sat their until it was time to move and she crushed the pocket as if it rolled her out to the 4 board. The pin reaction on the 12 board line was just as amazing as if I rolled it out to the 4 board. I have been throwing this ball for 2 weeks now and I have average 244. This ball is a must get and great for pin reaction.