Bowling ball core · Hammer
Hammer Redemption Core
The core inside the Hammer Redemption line
An asymmetric core with mid-lane rev-up and high flare, built for medium to heavy oil. Balls with this core are no longer available at BowlersMart.
- Asymmetric
- RG 2.498
- Diff 0.053
- MB 0.015

Specs
RG AT 15 LB
2.498
Mid-lane rev-up
40% of the reactive and urethane balls we stock have a lower RG.
DIFFERENTIAL AT 15 LB
0.053
High flare
78% of the reactive and urethane balls we stock have a lower differential.
MASS BIAS AT 15 LB
0.015
Mild asymmetry
24% of the asymmetric reactive and urethane balls we stock have a lower mass bias.
| Weight | RG | DifferentialDiff | Mass biasMB |
|---|---|---|---|
| 16 lb | 2.510 | 0.046 | 0.013 |
| 15 lbUsed on this page | 2.498 | 0.053 | 0.015 |
| 14 lb | 2.515 | 0.053 | 0.015 |
| 13 lb | 2.597 | 0.041 | 0.014 |
| 12 lb | 2.593 | 0.041 | 0.014 |
Source: Hammer published specs, as shown on BowlersMart’s original Hammer Redemption core page (2022). RG and differential change with ball weight; use the row for the weight you throw. The highlighted 15 lb row is the one used on this page.
Looking for a ball like your Redemption?
Balls with the Hammer Redemption Core are no longer available at BowlersMart. These in-stock balls have the closest RG and differential.

Brunswick Alpha Premier Solid HK22C2 Reactive
Medium to heavy oil

SWAG Supreme Solid AP26
Heavy oil, medium to heavy oil

DV8 Maximum Havoc Hybrid Reactive
Medium to heavy oil

SWAG Witness Reactive
Medium to heavy oil

Ebonite HK22 GB 13.7 Solid Reactive
Medium to heavy oil

Radical Outer Limits Black Hole
Radical HK22C Solid Reactive
Heavy oil
Balls with the Hammer Redemption Core
None of the 3 balls with the Hammer Redemption Core are in stock at BowlersMart right now.
Show 3 balls no longer available at BowlersMart
| Ball | Cover | First seen |
|---|---|---|
| Hammer Redemption Solid Bowling Ball | Reactive | January 2020 |
| Hammer Redemption Pearl Bowling Ball | Hammer Aggression Solid CFI Reactive | January 2020 |
| Hammer Redemption Hybrid Bowling Ball | Hammer Aggression NE Hybrid Reactive | July 2020 |
Where the Hammer Redemption sits
Each dot is a core in balls we stock. Cores close together roll alike; the cover and layout decide the rest.
Navy ring = a ball in your bag. Dashed ring = off this chart, or this same core.
Nearest cores, zoomed in
Navy ring = a ball in your bag. Dashed ring = off this chart, or this same core.
This core 1 Nearest cores Other cores
| Core | Brand | Shape | RG | Diff | vs this core |
|---|---|---|---|---|---|
|
|
Radical | Asymmetric | 2.499 | 0.051 | RG +0.001 · Diff −0.002 |
|
|
SWAG | Asymmetric | 2.500 | 0.051 | RG +0.002 · Diff −0.002 |
|
|
Brunswick | Asymmetric | 2.502 | 0.051 | RG +0.004 · Diff −0.002 |
|
|
SWAG | Asymmetric | 2.490 | 0.052 | RG −0.008 · Diff −0.001 |
|
|
Hammer | Asymmetric | 2.489 | 0.053 | RG −0.009 · Diff 0.000 |
|
|
DV8 | Asymmetric | 2.504 | 0.051 | RG +0.006 · Diff −0.002 |
Matches use 15 lb RG and differential.
Drilling and tools
Turn on JavaScript to compare with your ball.Balls with the Hammer Redemption CoreNone of the 3 balls with the Hammer Redemption Core are in stock at BowlersMart right now.Show 3 balls no longer available at BowlersMartMore bowling balls with the Hammer Redemption CoreBallCoverFirst seenHammer Redemption Solid Bowling BallReactiveJanuary 2020Hammer Redemption Pearl Bowling BallHammer Aggression Solid CFI ReactiveJanuary 2020Hammer Redemption Hybrid Bowling BallHammer Aggression NE Hybrid ReactiveJuly 2020Where the Hammer Redemption sitsEach dot is a core in balls we stock. Cores close together roll alike; the cover and layout decide the rest.All coresSymmetricAsymmetricHammer onlyAny brand900 GlobalBrunswickColumbia 300DV8EboniteEpicHammerKR StrikeforceMotivRadicalRoto GripSWAGStormTrack+−ResetZoom to this coreStorm Element Tour A.I. Core, RG 2.470, diff 0.035DV8 Larceny Core, RG 2.471, diff 0.028DV8 Renegade Core, RG 2.499, diff 0.040Track I-Core Gen4, RG 2.480, diff 0.053Brunswick Vintage Light Bulb Low RG Core, RG 2.568, diff 0.032Brunswick Dual Centric Core, RG 2.509, diff 0.047Ebonite Big Time Core, RG 2.508, diff 0.054Hammer Stacked LED Core, RG 2.545, diff 0.047Hammer Vindicator Core, RG 2.474, diff 0.053Radical Vexed Variant Asymmetric Core, RG 2.490, diff 0.045Radical Modified Intel Symmetric Core, RG 2.483, diff 0.032Motiv Affliction V2 Core, RG 2.480, diff 0.055900 Global Conduit A.I. Core, RG 2.590, diff 0.050Roto Grip GEM A.I. Core, RG 2.490, diff 0.057Hammer Obs
Questions bowlers ask
What is the RG of the Hammer Redemption Core?
At 15 lb the Hammer Redemption Core has an RG of 2.498. It ranges from 2.498 to 2.597 across the listed weights.
What is the 14 lb RG of the Hammer Redemption Core?
At 14 lb the RG is 2.515.
What is the differential of the Hammer Redemption Core?
At 15 lb the differential is 0.053. The mass bias is 0.015.
Which bowling balls use the Hammer Redemption Core?
Hammer Redemption Solid Bowling Ball, Hammer Redemption Pearl Bowling Ball, Hammer Redemption Hybrid Bowling Ball. 0 are in stock now.
Can I still buy a ball with the Hammer Redemption Core?
Balls with this core are currently unavailable at BowlersMart. Closest in-stock alternatives by RG and differential include Brunswick Combat Solid Bowling Ball, SWAG Executioner Solid Bowling Ball, DV8 Heckler Taunt Bowling Ball, SWAG Judge Bowling Ball, Ebonite Go Time Bowling Ball, Radical Outer Limits Black Hole Bowling Ball.
How do the Hammer Redemption Core specs change by weight?
At 16 lb: RG 2.510, differential 0.046, mass bias 0.013. At 12 lb: RG 2.593, differential 0.041, mass bias 0.014.
How does the Hammer Redemption Core compare with my ball?
Type the ball you throw into the Compare with your ball box on this page. It shows the RG and differential side by side and saves your bag for every core page.
Sources and method
Specs. Hammer published specs, as shown on BowlersMart’s original Hammer Redemption core page (2022), as published by the manufacturer.
Baseline. The baseline is 212 in-stock, published reactive and urethane balls. Plastic and polyester covers, 2-piece, 3-piece and pancake cores, missing covers and missing RG or differential values are excluded.
Percentiles. Percentiles are the share of baseline balls with a strictly lower or higher value; ties are not counted.
Nearest cores. Nearest cores are ranked by distance on standardized 15 lb RG and differential, with the same symmetric or asymmetric shape preferred among near ties (distance bands of 0.1).
Mass bias. Mass bias is compared among asymmetric balls with numeric mass bias only.
Updated. Catalog and page updated 2026-10-16.


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