The Shock Trauma that I drilled had the pin out about 4" from the center of gravity, with about 3 1/4 oz of top weight. I put the pin over my ring finger with the mass bias about 2 inches to the right of my thumb hole. This could also be looked at as a 4 3/4 inch pin to PAP in a 75 degree layout. For me this is my "default" layout, when I am in a hurry, or don't otherwise know what I want the ball to do. I did have to use a small hole low to get the ball back to legal side weight.
The ball comes dullish out of the box. It actually gets pretty good length with the box surface. Good on fresh, oily, and some sport type shots. The break point is not very sharp with this surface, very smooth. I planned on shining this ball from the beginning, but wanted to throw it box just to see. I really like what I saw. I think this ball will work very well for me in Regional conditions, because we bowl on fresh oil most all the time, so the heads will be good. With a little more "rollier" layout, I think the ball would be even better.
With the shine on it, it is very long and has a very nice back end. Fairly snappy, but not like it bounced off a rock. The ball compares to a Trauma ER, but I think the ER hooks more at the break point. These balls have similar length, but the Shock Trauma is a little smoother at the break point. Very nice hit though, with both balls.
For you Storm Fans- this ball is longer than the Eraser Boost, cleaner through the front, probably not quite as sharp at the break, and more overal hook with the box surface. Longer than an LRG, less hook overall. Similar length to the Core Power HRG, but more back end.
Don't really think there is a style that can't use this ball. Very versatile, but may hook a little too much to be a "benchmark" ball. For me personally, Tour Power is a better benchmark ball. Another nice ball from "The Bowler's Company"!!!
Hope this helps ya!
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Mike Austin
Mike Austin's Precision Pro Shop
Houston, TX
strikes4days@aol.com