This is all very educational. The way you folks all talk about "urethane" seems to be the way I saw the AMF Hype Urethane, but you're all talking about the Storm Natural. Originally, I had thought the Storm Natural BECAUSE of the way it was so easy to polish, that it was more more a blend of resin and urethane. Now, due to this discussion, AND the reviews of the Natural Pearl, whose stock surface is 4000 grit dull, I see the Natural is more like the AMF Urethane than anything else.
Having had and tried the AMF urethane to no avail, I tried the Brunswick Avalanche urethane, a pearl urethane polished. The AU is nothing whatever like the Natural or the Hype Urethane - no resemblance whatsoever. It is more like a polished slightly rolly resin ball. It gets easier length and actually has a defined breakpoint and hitting power without the excessive (estimated 18 mph) ball speed required by the Natural and the Hype Urethane to "hit".
The Brunswick AU, I would recommend to anyone, despite their ball speed. Mine is 13 - 14 at the pit, based on Qubica gauges. I can use it this ball as alternative to the Slingshot and the Slide and several other "dry" lanes balls.
Once you try it, you will wonder how others have written what they have in this discussion.
Neptune66,
I can readily recommend you try this, the Brunswick Avalanche Urethane. It is COMPLETELY different from the Natural. You will wonder how you can ever have said that your "urethane" experiment was over. Limiting yourself to a single ball in such an experiment was not ... well-advised.
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