I drilled the Columbia 300 Pure Madness 50 x 4.25” x 25 to be that big solid asym that can rip off the spot when the condition calls for it, and it fits perfectly there. The Pure Madness uses the Craze core combined with the HK22 - ERT Solid cover to produce the strongest ball in the Columbia lineup. I can move inside on patterns like Hardwick 44’ with ease, cut off my angles, and the Pure Madness keeps striking. On medium length, heavier patterns, like Alcatraz 38’, I can get the ball to roll forward quicker, stop at the pocket, and still carry corner pins like I am peeling it off the edge. The only patterns I do not recommend this ball on are super short, or light volume medium patterns, which is why Columbia 300 has other great options like the Piranha PowerCOR or Cuda PowerCOR Pearl. Lastly, if you bowl on house shots, you will love this ball because you can move as deep as you want, and the Pure Madness keeps hooking and striking! Get your hands on one now from Bowler Builders Pro Shop or pro shops everywhere!