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Storm Bill Chrisman

Photo and specs courtesy of bowwwl.com. Reproduced with credit to the maker.

How it moves

Foul lineArrows · 15 ft50 ft · board 105.9° entry
Arcing turn (symmetric core). Dotted is skid, then the turn, then the roll into the pocket. Estimated from the coverstock, finish, core, and differential for a right-handed bowler with medium revs on a house shot. Lane conditions, speed, and layout move all of this.
Storm

Bill Chrisman

Hook potential5 (est.)5 of 10, estimated

How much the ball wants to hook, 1 (straight, a spare ball) to 10 (the strongest oil-eaters). The maker publishes no number for this ball, so this is estimated from the coverstock, core, finish, and differential.

Coverstock
R2S Pearl
Reactive pearl
Core
Inverted Fe2
Symmetric
Factory finish
Reacta Gloss
Color
Not listed
Released
2023-11-20
USBC
Approved 2023-12-05

Weights and specs

WeightRGDifferentialInt. diff
12 lb2.650.035—
13 lb2.590.045—
14 lb2.580.037—
15 lb2.570.046—
16 lb2.520.058—

Surface

oil · laneCoarse grit
oil · laneCoarse and fine
oil · laneFine grit or polish
Reacta Gloss. Skims the oil and saves its energy for the dry part of the lane: longer skid, later and sharper hook. Polished and pearl balls. Surface changes over games, and a pro shop can take any ball either way with a pad.

Balls like this

Same coverstock and core type; the closest company for this ball in a bag.