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Columbia 300 Eruption Pro Blue

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

How it moves

Foul lineArrows · 15 ft43 ft · board 75.4° 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.
Columbia 300

Eruption Pro Blue

Discontinued
Hook potential7 (est.)7 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
Bend-It Solid
Reactive solid
Core
Modified Resurgence
Symmetric
Factory finish
Not listed
Color
Midnight Blue
Released
2017-11-01
USBC
Approved 2017-10-24

Weights and specs

WeightRGDifferentialInt. diff
12 lb2.600.039—
13 lb2.530.055—
14 lb2.530.035—
15 lb2.500.036—
16 lb2.510.031—

Surface

oil · laneCoarse grit
oil · laneCoarse and fine
oil · laneFine grit or polish
Coarse surfaces grip through oil and hook early; fine or polished surfaces skid longer and hook later. 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.