Proof Pearl
Upper-Mid Performance
- Coverstock
- Outer shell of the ball
- Prime Response Pearl
- Finish
- Surface texture on the ball (sanded, polished, etc)
- 500, 1000 Siaair / Crown Factory Compound
- Lane Condition
- Length and/or amount of oil on the lane
- Medium to heavy oil
- Color
- Color of the ball
- Black / Smoke Pearl
- Weights
- Available weights
- 16-12 LBS
- Core
- Weight block inside the ball
- Proof
- Core Type
- Basic shape type of the core (Symmetric, Asymmetrical, Pancake)
- Asymmetrical
- RG
- Radius of Gyration: measurement related to weight distribution of the core. This affects how quickly a ball will get in to a roll. A ball with a higher RG will roll later. A ball with lower RG will roll sooner.
- 16 LB. - 2.506
- 15 LB. - 2.519
- 14 LB. - 2.538
- 13 LB. - 2.589
- 12 LB. - 2.612
- Differential
- Difference between the RG of the core's x-axis and y-axis. Indicates track flare potential and stability. A higher differential means more flare potential and less stabilty. A low differential ball will be more stable and have less flare potential.
- 16 LB. - 0.052
- 15 LB. - 0.052
- 14 LB. - 0.052
- 13 LB. - 0.043
- 12 LB. - 0.043
- Intermediate Differential
- Difference between the RG of the core's x-axis and Z-axis on an asymmetrical core. Indicates the asymmetry of the core. A higher intermediate differential ball will be less stable and will transition more quickly from skid to roll than a ball with lower intermediate differential.
- 0.020
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Proof Pearl Product Notes
- Follow up to a great ball!
It’s been a long-time since we’ve tested a ball like the Proof. A ball that looked great for everyone regardless of style and bowlers all over the world have confirmed this. While the Proof is known as a great ball, we are excited to follow it up with the Proof Pearl, a shiny version that gives you the same great reaction, that’s intended for more medium oil lane conditions.
- DynamiCore Technology
The Proof Pearl uses DynamiCore – the industry leading innovation in outer core technology developed by Brunswick Bowling Products. This leap in bowling ball technology is a more durable outer material that yields less compression upon impact increasing hitting power and creating an undeniable difference in sound and pin carry.
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Info Sheet