I'm a no thumber. I have a ball that was drilled with finger holes only. CG between finger holes with a half oz of top weight after drilling. No side or finger weight. This is legal as I understand the rules. I have now drilled this ball with new finger holes and a thumb hole. The cg and old finger holes are in the new grip center. I haven't checked it yet, but the statics should be legal. Is this ball legal for usbc play with the old finger holes in grip center or do they have to be plugged for the ball to be legal?
Thanx for your replies and expertise. I'm just playing around with this ball, but I might use it in a league if it's legal. Otherwise I'll make it a practice ball or plug either the new holes or the old ones.
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Why does everyone laugh when I bowl?
louie