Brunswick Bowling Ball drill sheets and layout guide

On this page we will cover the asymmetric and symmetric Brunswick bowling ball drill sheets. Symmetrical instructions are down below the asymmetrical instructions and it is important to remember that your positive axis point (PAP) may differ from the one used below for illustrations. When your pro shop professional uses your PAP the images below may look a little different when applied to your new Brunswick bowling ball. 

7 Asymmetrical Layouts to Use When Drilling Brunswick Bowling Balls

Maximum Hook & Arc Drilling Layouts Good for most House Shots

Maximum Hook & Arc Asymmetric Core Bowling Balls

• Best pin out distance to use: 0”– 3 ½”
• Locator pin set at 45 degrees 
• Pin below fingers (VAL angle 70 degrees)
• Rev’s up strong for maximum hook with
a continuous back-end.
• Responds to the lane the soonest.
• Slowest response to friction. Low Track
• 1. P is the larger circle or pin on the ball that marks the top
of the core.
2. L is a smaller circle or pin that marks Preferential Spin Axis
(PSA / Mass Bias) of the ball
3. For left-handed bowlers use the mirror images of these layouts

• Note: Finger, thumb and X- holes must have at least a moderate bevel
and the riser Pin P must be at least one inch from any drilled hole to
comply with the Brunswick warranty.

Brunswick Asymmetrical Balls

Mid-Lane Hook & Back-End Drilling Layout A favorite for fresh PBA and Sport Conditions

Mid-Lane Hook & Back-End Asymmetric Core


• Best pin out distance to use: 0”– 3 ½”
• Locator pin set at 60 degrees Medium Track
• Pin below fingers (VAL angle 70 degrees)
• This layout helps bowlers open up the
mid-lane and recover on heavy carry down
• Responds to the lane soon.
• Slow response to friction. Low Track
• 1. P is the larger circle or pin on the ball that marks the top
of the core.
2. L is a smaller circle or pin that marks Preferential Spin Axis
(PSA / Mass Bias) of the ball
3. For left-handed bowlers use the mirror images of these layouts
• Note: Finger, thumb and X- holes must have at least a moderate bevel
and the riser Pin P must be at least one inch from any drilled hole to
comply with the Brunswick warranty.

Length & Back -End A favorite for broken down PBA and Sport Conditions

Length & Back-End Asymmetric Core


• Best pin out distance to use: 3”– 6”
• Locator pin set at 45 degrees Medium Track
• Pin above fingers (VAL angle 30 degrees)
• This layout helps bowlers open up the
mid-lane and recover on heavy carry down
• Responds to the lane late.
• Fast response to friction. Low Track
• 1. P is the larger circle or pin on the ball that marks the top
of the core.
2. L is a smaller circle or pin that marks Preferential Spin Axis
(PSA / Mass Bias) of the ball
3. For left-handed bowlers use the mirror images of these layouts
• Note: Finger, thumb and X- holes must have at least a moderate bevel
and the riser Pin P must be at least one inch from any drilled hole to
comply with the Brunswick warranty.

Length Good for most broken down House Shots

Length Asymmetric Core

• Best pin out distance to use: 3”– 6”
• Locator pin set at 70 degrees 
• Pin above fingers (VAL angle 30 degrees)
• This layout helps bowlers open up the
mid-lane and recover on heavy carry down
• Responds to the lane the latest.
• Fastest response to friction. Low Track
• 1. P is the larger circle or pin on the ball that marks the top
of the core.
2. L is a smaller circle or pin that marks Preferential Spin Axis
(PSA / Mass Bias) of the ball
3. For left-handed bowlers use the mirror images of these layouts
• Note: Finger, thumb and X- holes must have at least a moderate bevel
and the riser Pin P must be at least one inch from any drilled hole to
comply with the Brunswick warranty.

Full Roller Layouts For asymmetric core bowling balls

 

“These layouts are very general and will apply to every bowler differently based on multiple variables. These include the bowlers ball speed, rev rate,
axis rotation & tilt, and lane conditions. All or most of these variables should be known so that the best possible layout can be chosen for each ball.
We recommend that you contact your local Pro Shop Professional for more detailed layouts and how to apply them to your game for each ball in your arsenal.”

 

Maximum Hook & Arc – Full Roller Asymmetric Core

• Best pin out distance to use: 3”– 6”
• This layout will give the bowler maximum hook
with a continuous back-end.
• 1. P is the larger circle or pin on the ball that marks the top
of the core.
2. L is a smaller circle or pin that marks Preferential Spin Axis
(PSA / Mass Bias) of the ball
3. For left-handed bowlers use the mirror images of these layouts
• Note: Finger, thumb and X- holes must have at least a moderate bevel
and the riser Pin P must be at least one inch from any drilled hole to
comply with the Brunswick warranty.

Length & Back-End – Full Roller Asymmetric Core


• Best pin out distance to use: 0”–3”
• This layout helps bowlers create length
with a strong back-end
• 1. P is the larger circle or pin on the ball that marks the top
of the core.
2. L is a smaller circle or pin that marks Preferential Spin Axis
(PSA / Mass Bias) of the ball
3. For left-handed bowlers use the mirror images of these layouts
• Note: Finger, thumb and X- holes must have at least a moderate bevel and the riser Pin P must be at least one inch from any drilled hole to comply with the Brunswick warranty.

Length – Full Roller Asymmetric Core

• Best pin out distance to use: 0”– 3”
• This layout helps bowlers create length with
a smooth arcing back-end
• 1. P is the larger circle or pin on the ball that marks the top
of the core.
2. L is a smaller circle or pin that marks Preferential Spin Axis
(PSA / Mass Bias) of the ball
3. For left-handed bowlers use the mirror images of these layouts
• Note: Finger, thumb and X- holes must have at least a moderate bevel and the riser Pin P must be at least one inch from any drilled hole to comply with the Brunswick warranty.

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Brunswick Symmetrical Bowling Ball drill sheets and layout guide

7 Symmetrical Layouts to Use When Drilling Brunswick Bowling Balls

Maximum Hook & Arc Symmetric Core

These Layouts Are Recommended For Bowling Balls With an RG differential of 0.040 or greater

• Best pin out distance to use: 0”– 3 ½”
• To fine tune with an X – hole please see our attached drilling instructions.
• Rev’s up strong for maximum hook with a continuous back-end.
• Responds to the lane the soonest.
• Slowest response to friction. Low Track
• 1. P is the larger circle or pin on the ball that marks the top of the core.
2. For left -handed bowlers use the mirror images of these layouts.
• Note: Finger, thumb and X- holes must have at least a moderate bevel and the riser Pin P must be at least one inch from any drilled hole to comply with the Brunswick warranty.

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