Brunswick Drilling Layouts

Asymmetric balls have an additional small marker (the L or PSA pin) printed alongside the larger main pin (P). If your ball only has one pin, it is symmetric. Brunswick prints both markers clearly on their asymmetric models. Use the asymmetric layout charts above if you see two markers, symmetric if you see one.

Pin-out is the factory measurement between the pin (P) and the center of gravity (CG), in inches. It is printed on the box label and often etched on the ball itself near the pin. Each layout above specifies the pin-out range it is designed for (for example “0–3½ inches”). Pick a layout whose range includes your ball’s pin-out measurement.

Both are angles measured from your PAP, but they reference different things. The locator angle (45°, 60°, 70°) describes where the pin sits relative to your PAP and helps orient the core. The VAL angle (Vertical Axis Line) describes the angle between your PAP and the line drawn from PAP through the pin to the VAL, which controls backend shape. Brunswick’s instructions use both because they describe different aspects of the layout.

The principles transfer, but the specific numbers do not. Every manufacturer designs their cores with slightly different RG, differential, and intermediate differential values, and they publish layouts tuned to those cores. A layout that works perfectly on a Brunswick Quantum will look different on a Storm Phaze or a Hammer Spawn. Use brand-specific guides whenever possible.

Full-roller is a release style where the ball rolls over the entire circumference of the track, rather than the more common semi-roller or spinner tracks. Full-rollers create a larger flare ring on the ball, which means traditional pin distances over-flare and lose energy. Brunswick publishes dedicated full-roller layouts (in red headers above) with adjusted pin distances to keep flare manageable for the style.

It will. The charts are drawn from a standard reference PAP for illustration. Your actual PAP is unique to your release and is measured at the pro shop. The chart shows the relative geometry, not the absolute coordinates. A certified driller will apply the chart’s geometry to your specific PAP measurements when laying out the ball.