Updated: 2004-Jul-6
Overall: a good all-around ball for medium to medium-heavy oil conditions, depending on your speed and revolutions of course. As I have it drilled (see below), the ball is somewhere between skid-flip and early roll, leaning more towards skid flip. Above average length with above average back-end. The ball does a nice job of dealing with carrydown on patterns to 40 feet (short and medium patterns). Also a nice "benchmark" ball to feel-out a lane during practice.
Ball Specs and Layout:
Surface: Box condition then Green Scotchbrite pad
Layout: 4 1/2 x 5 or "label" or 90 degree)
Ball Weight: 16lbs
Pin Out: 3 inches
Pin Placement: 4 1/2 inces from PAP
CG: 5 inches from PAP, on grip centerline
Top Weight: 3 ounces
Typical house shot, 39 foot pattern: Good reaction and predictability, though it tends to be a better choice when there is some forgiveness on the inside (pulled shots) than on the outside as the ball will recover on its own on a shot thrown wide.
Sport shot, 42 foot flat pattern: Perhaps it is the layout, but even with fresh back ends, the entry angle was too steep for this ball to be of any use, leaving ringing 10's and the occasional 7-10s. A more up-the-back bowler (less axis rotation) may be able to take advantage of this ball on these conditions.
PBA Pattern-C: This ball stays in the bag for the same reason as the sports shot, too much length and too angular of a back-end. However, this ball was playable as the lanes began to break down and the backends were stronger.
Comparisons to other equipment
Ebonite Optyx Illusion: This is about the closest ball to the Shock Trauma I've bowled with. The balls are very similar in length, backend, and overall hook.
Lane #1 C/2 Blueberry:
Both of my blueberry's, both drilled differently, have a much smoother breakpoint and less angular backend with more length. I'd say the Shock Trauma is slightly stronger in terms of overall hook.
Hammer Diesel Reactive Pearl:
The Diesel RP is "longer and stronger" - more length with a stronger backend but less angular breakpoint than the Shock Trauma.
Updated 2004-Mar-31: I now have somewhere in the area of 700 games on this ball. While it doesn't react the way it did when new, it still works nicely for medium-light to medium patterns. The ball has not been resurfaced, though I routinely clean it and hit it with a green scotch brite from time to time.