I drilled this ball approximately as recomended by Columbia 300's Med oil specs which are found on their web page. The Pin position is ( B ) and falls just below my ring finger, c.g. at position 2, distance from pin x c.g. to PAP is at 4 x 3/8 and with a axis hole. In addition to the box specs I have 2 1/2 oz of top weight, 5/8 oz Poss side weight, and 1/2 finger weight. This drill gives me a great deal of leanth, the break point was measured at about 45 feet,then the ball cut hard to the pocket. I used this ball on lanes that use a Christmas tree pattern of oil, the oil is spread evenly across the boards then tapers off on the out sides. The oil is spread out to 40 feet, and is lighter on the out sides from about 10 out to the gutters. My style of bowling is a " down and in shot " playing the plane. My ball speed is approx: 15 to 17 MPH, with average revs, but I get a tremendous amount of forward roll and lift. With that said I want to offer my opinion of this ball. I found myself being able to swing this ball from about 18 to 7 and get it back to the pocket with exceptional carry, only left 2 ten pins throuh out 3 games, most of the spares were on the left side of the lane, and those were usually seven pins. Since I am not a seasoned cranker I had a confidence problem playing the inside to out, but the ball quickly educated me and gave me the confidence to change my usual style and still score with respectable results. When I hit a house with heavy oil I will be able to move back out and throw anywhere from 5 to 10 up and know I can get it back with authority. This ball hits hard anywhere in or around the pocket with great pin mix. This is the first Columbia ball I have owned and I must say that I am impressed. Mike aka Plane Facts.