Part Number

60-105262-93X

Core Type

MACE

Coverstock

Propel

Finishing Steps

1,000 Micro Pad

RG Differential

.056

RG Average

Center Heavy (1)

2.8 Cover Heavy (10)

Hook Potential

Low (10)

170 High (175)

Length

Early (25)

100 Long (235)

Breakpoint Shape

Smooth Arc (10)

85 Angular (100)

Battering Siege

Propel Coverstock

Propel™ is a evolutionary coverstock developed by Brunswick to improve the mid-lane and backend traction of the ball on today’s slicker oils and lane surfaces. The Propel coverstock was discovered through testing of new formulation additives and process changes in coverstock manufacturing.

MACE Core

Mechanical Asymmetric Core Engineering. The MACE core has three major benefits: ultra low RG core system to engage the Propel coverstock, high RG differential to aid in traction through heavy oil and high RG asymmetric differential to quicken the response time to friction. Designed as a two-component elliptical core system, the MACE core is dynamically the strongest asymmetric core ever produced for a Brunswick ball.

Ball Motion

The Battering Siege™ unites the Propel coverstock and the MACE core to produce a ball motion that is both aggressive in the oil and aggressive on the backend. The Battering Siege is your ball when your game needs help battling heavy oil conditions and poor pin action.

Reaction Setup

The Battering Siege can be drilled using the standard drilling techniques developed for asymmetric bowling balls.

Lightweight Engineering

The unique core shape of each Brunswick ball is used for weights from 14 to 16 pounds. This approach to lightweight ball engineering provides bowlers with consistent ball reaction characteristics across this weight range. The same drilling instructions can be used for 12- and 13-pound balls. This is because Brunswick uses a generic core shape with an RG differential that is close enough to the 14-16 pound shape.