I understand the meaning of RG but not the small differences I see on certain rated balls. Let me explain. Ball W has a RG of 2.451. I know this ball will get into a roll early based on the position of the weight block. Ball X has a RG of 2.621. This ball will travel further down the lane before it gets into it’s roll.

My question is when Ball Y has a RG of 2.553 and ball Z has RG of 2.559. Is there that big of difference? Ball Y will get into a roll sooner, but how soon? In board feet, how far will Ball Z travel than Ball X if everything is equal ( speed, release, layout, cover)?

Some companies have many of their balls bunched close together in RG.

Lane#1 is a prime example. Looking at their tech sheet every one of their balls fall into this category.

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My wrist brace is just like my RADAR detector, I really don't need it but it sure makes me feel better when I have it on.

I believe higher differentials will hook earlier, particularly for the lower rev player.

The track flares primary function is to expose new ball surface to the lane that doesn’t have any lane conditioner on it. The dry ball surface will hook earlier and strong once it the ball gains enough friction to hook.

The more differential the easier the ball flares so the lower rev player can get separation between their track rings. Once you have separation (each ring can be seen with space between them except at the bowties) any additional distance between the rings is really un-needed. Stronger releases can gain this separation with lower differentials and/or weaker core drillings.