Brunswick Bowling Ball Drill Sheets

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

Technical Notes:

• P is the larger circle or pin on the ball that marks the top of the core
• L is a smaller circle or pin that marks Preferential Spin Axis (PSA / Mass Bias) of the ball
• For left-handed bowlers use the mirror images of these layouts

Brunswick Warranty 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.

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

Brunswick Warranty 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.

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

Brunswick Warranty 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.

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

Brunswick Warranty 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.

Best pin out distance to use: 3″– 6″

• This layout will give the bowler maximum hook with a continuous back-end
• Designed specifically for full roller bowlers

Brunswick Warranty 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.

Best pin out distance to use: 0″–3″

• This layout helps bowlers create length with a strong back-end
• Optimized for full roller style

Brunswick Warranty 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.

Best pin out distance to use: 0″– 3″

• This layout helps bowlers create length with a smooth arcing back-end
• Full roller specific configuration

Brunswick Warranty 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.

Best pin out distance to use: 0″– 3 ½”

• Rev’s up strong for maximum hook with a continuous back-end
• Responds to the lane the soonest
• Slowest response to friction

Best pin out distance to use: 2″– 4″

• This layout helps bowlers open up the mid-lane and recover on heavy carry down
• Responds to the lane soon
• Slow response to friction

Best pin out distance to use: 3″– 6″

• This layout helps bowlers create length with a strong back-end
• Responds to the lane late
• Fast response to friction

Best pin out distance to use: 3″– 6″

• Length drilling with arcing back-end
• Responds to the lane the latest
• Fastest response to friction

Best pin out distance to use: 1″– 4″

• This Basic Full Roller Drilling will not over flare for most bowlers
• This layout will give the bowler maximum hook with a continuous back-end

Best pin out distance to use: 4″– 6″

• This layout helps bowlers open up the mid-lane with a strong continuous back-end

Best pin out distance to use: 4″– 6″

• This layout helps bowlers create length with a strong arcing back-end