Punched up the Shock Trauma for the new league season using a 2.96 top weight 2 1/2" pin and drill pattern 3 15/16" X 3 15/16". Brought ball under 1 ounce side with a 25/32" hole on my axis, drilled 2 1/2" deep. This drilling seems to be very forgiving and predictable and produced a 708 series with 4 missed spares after taking the summer off. Recommend this ball to all the Storm lovers who enjoyed the El Nino Gold. Best of luck to everyone this season.
Sidewinder