i had a 299 tonite with my trusty rattler with only a ringing 10 pin keeping me from perfection. this particular house has 50+ year old wood lanes with laneshield overlay, an appx. 40' top-hat oil pattern, and iffy carry. our pair had ten(10) 7-10 splits on it tonite.....and just as many solid 8's. i had one of each thank you. in spite of my c-system getting most of my attention i'm still impressed with the rattler. a great ball for not much money !