I drilled my Storm Code Black 65 x 4 13/16 x 50. This ball comes out of the box at 1500 grit polish. What I found with this ball is how easy this ball gets thru the front part of the lane for a asymmetric ball and a pretty abrupt change of direction. After using this ball on a fresh house shot I used a 3000 grit abralon pad really soft just to help slow the back ends down a touch. This made a big difference and made this ball really come to life. I will end up using this ball on a medium pattern or when the lanes break down a touch and I can go more left to right. Storm bowlers will love this ball.