I have heard mixed things about Pro CG balls, most sites say the exact same thing, once reserved for only the PBA now made avaible to the public. One thing i know is you can do more advanced drills without the use of a weight hole, which in a non PR CG ball you would need one. But then a couple bowlers said that they are blems, which i have not seen on any research website i have looked at. So basically is there anything i should know about a Pro CG ball before i drill mine up???
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learn to love your bad strikes, 'cause your good ones usually leave the corners

As far off as you could possibly think of.
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BOWL N.C. TOUGH SHOTS TOUR

"Pro-CG and pro-pin, once reserved for professionals now available to the public" sure does sound a whole long nicer than "our manufacturing process is not tight enough to eliminate mistakes, and instead of throwing these in the ball chipper, we're selling them to you", doesn't it?

"Once reserved for the pros" is spin on the fact that pros can generally get away with more oddball drillings and they know what the limitations or benefits of a certain layout will mean for their game.  They'll find that one lane condition that a ball works great on and won't worry that it's too condition-specific to be used more often.  Most league bowlers would be upset to drill a ball that worked on one shot and that's it.

If you're not getting a deal, don't bother.  Most assuredly don't pay full price.  Know that you might be limited in your options.

SH