My Rock Star is drilled with the pin to the right of the ring finger, but slightly above (NE to fingerhole).  The CG is on the midline, kicked out about 3 1/2 inches putting the final specs at 4 1/2 by 2 1/2.  It is a good hook and set drill pattern for a ball that is built to hook and set.  

I bowled with on on numerous lanes.  Wood with Guardian, synthetic (3 types) synthetic with guardian, straight wood (old).  The ball gives a same reaction of hook and set no matter what shot they put out, making it very reliable in getting to the pocket.when the backends are fresh, the ball sets up.  On carrydown, it arcs.  The ball is always dependable.

This could very well be the perfect bowling ball.  You get exceptional control and great smoothness through the heads, and a hard hitting but controllable backend reaction.  The Rock Star does a great job of setting up in the backend, especially when the backs are freshly stripped, without overreacting.  For a particle ball, it carries very nicely when you move inside.  A definite keeper by Columbia.

JP

Drilled my Rock Star with a 5x5 drill pattern. This ball is exactly what the specs say it should be, it is a bit longer than the Rock Solid, and a bit sooner hooking than the Pearl Rock. The Rock Star bites the lane as hard as any Rock, but tends to work better with some carrydown as compared to the Pearl Rock. When the head breakdown, this ball clears the heads better than the Rock Solid. Tonight was my 3rd time using the ball, and I bowled 813 with it. Totally impressed, and I thought the Rock Solid was a good ball, this ball might be right along with it.

For review purposes, I put more than average revs on the ball, and have average speed. My PAP is 4 3/4 X 1/2 down. Therefore, I have an inverted track. This creates early roll which is why in most reviews you will read that the layouts of my equipment will be no less than 4 X 4.

My Rock Star is drilled 5 X 5.  To begin, the pin was out about 2 1/2 inches.  I have been very pleased with this ball.  It gets through the heads very clean.  The backend reaction of it is very predictable.  This is unlike my experience with the Rock Pearl.  The Rock Star turns up fairly hard, but with a very strong arcing motion.  This allows me to play a little deeper and still have confidence that the ball will react on the backend with enough energy left to hit the pocket with much power.  Currently, this is my most hooking ball in my arsenal.  It has been a pleasant addition.

I have thrown this ball on several conditions with it working best when there is little carrydown.  However, it also performs very well when there is some carrydown.  It is not your flood ball, but will handle most conditions well.

I bought this ball a few weeks ago. Here are the stats; I am a rightie, above average ball speed, a little above average revs. The ball is drilled with the pin above the ring finger. ( Drilling A, that is suggested by Columbia)I left it in the " out of box" condition. I have thrown this ball on my house shot and two tournament shots. Low series of them has been 675. This ball is so smooth, it gets through the heads really well, and has such a nice break to the pocket. The carry has been great, it rips the rack on light hits and tosses out the ten pin on the half hits.  It even has done well on some of the high hits, tripping the four pin. It is definitely my first ball out of the bag.  Great job Columbia.

love this ball on heavy oil
pin under the ring finger with a 3 inch pin kicked out a bit to the right
columbia just keeps coming out with better and better stuff
first the messanger ti pearl and this
i bowled with this on heavy oil
played 15-10 and it came back but i am talking heavy heavy oil
the kind of oil you could right your name in ....lol
this is a great over all ball 9.5 out of ten
i am a power tweener

A good offering from Columbia.

I got a bit more length out of this one that I'd originally hoped.  Then again, I throw it too hard.  I drilled it with the pin above the fingers and kicked the CG 2" out at 3 o'clock.  Needed a small balance hole.

It's great on oil with clean backends.  If the backends are sloppy, bring on the scotchbrite pad.  A good ball for early house leagues or the first 2 games in the late league.

I picked this ball up several weeks ago after finding my Zone Control to be of no use on oily lanes.  I picked this ball up because it was listed as having an "aggresive" cover stock and had good reviews. I had it drilled for leverage using Columbia's pattern B 2 with a 4x3 3/8 pin x cg position (offset from the grip).

This ball quickly demonstrated stronger strike potential than the Zone Control.  It also demonstrated much more dramatic as well as differnt hooking patterns. On fresh lanes with a clean back end this ball ignores any amount of oil in the heads and will come back to the pocket from the edge even with low revs. Very consistant and forgiving. Unfortunately, if there is carry down, that all goes away and you end up playing down the edge hoping for dry stuff or rolling a fairly strait shot. In box polish at low revs it does not work well on a bad back end.  Not even slowing way down brings it back to the pocket. As the oil dries it is hard to keep a consistant roll as it grabs more and more lane and hooks. It needs a dry strech to make its turn.  In the next couple of weeks Im going to take a litte scotch brite pad to it and see if that gives a little better grip/turn in carry down (my Tuesday league has lots to practice on!).  Ill let you know how that goes!