I used this ball for the first time on 9/13/01. Didn't touch the surface of the ball, used it straight out of the box. It has three ounces of top weight, the c.g. is one and one half inches from the pin. Using the drill sheet that came with the ball I had it drilled with the pin 3 3/8 inches from the pap. The pin is right of the ring finger and the pin is below and right of the ring finger. It has a balance hole to make it legal.
Bowled a 604 the first night. Nothing spectacular, 205,207,192. The most strikes I put together were three, once in the first game and once in the third. One of the strikes in the first game was a Brooklyn. Missed my mark terribly. Never had a chance for the 1-3 pocket. As far as the reaction of this ball, I left one solid eight pin, one pocket 7-10, one washout, and a few ten pins. All of the ten pins deserved except one. Thought it was dead on. I stood at 23 and rolled it out to five. If I missed right this ball would come back strong to the pocket. I did have the one ugly washout, but that was my fault.
I'm happy with the 604, but still uncertain what this ball can do. I do know that this ball is not an oil ball. I'll rate it an 8. After using it once, I can't give it high praise, nor can I be negative. I'll update this review in a couple months.
I forgot to mention that the lanes I use the Nasty Nail Extreme on are dry. I don't have any idea what the exact conditions are, but the last three years I have averaged a 199, 194, and a 197 at this house using my old black Hammer I bought in 86. That's how dry these lanes are.