Bowler Ratings

PatternStTwCr
Oily:X.XX.XX.X
Medium:X.XX.XX.X
Dry:X.XX.XX.X
Sport:X.XX.XX.X

Bowler ratings are from 1 to 10 in order of Stroker (ST), Tweener (TW), Cranker (CR)

Note: Ratings are only available to our subscribers.

General Info

Coverstock Specs
Name:F55 Pearl
Type:Reactive Pearl
Box Finish:Polished
Color:Fire and Brimstone
Empty
Core Specs
Name:NA
Type:Symmetrical
RG:2.49
Diff:0.033
Int. Diff:0.000

The Heat Stroke is the medium performance release for AMF this summer. The core is one that has been used throughout the years and, in the Heat Stroke, is surrounded by an F55 pearl reactive coverstock. The lower flaring core and medium strength coverstock matched up best on our medium test pattern.

The Heat Stroke gave us what we put into it. Cranker had more length and a stronger back end shape, while Stroker and Tweener saw more movement in the midlane and an arc shape down lane. The highly polished shell caused some over/under for all three testers on

The Heat Stroke is the medium performance release for AMF this summer. The core is one that has been used throughout the years and, in the Heat Stroke, is surrounded by an F55 pearl reactive coverstock. The lower flaring core and medium strength coverstock matched up best on our medium test pattern.

The Heat Stroke gave us what we put into it. Cranker had more length and a stronger back end shape, while Stroker and Tweener saw more movement in the midlane and an arc shape down lane. The highly polished shell caused some over/under for all three testers on

The BTM Ball Testing Team

About The BTM Ball Testing Team

The BTM Ball Testing Team is led by Eric Martinez. Our team of three testers has thrown and reviewed hundreds of bowling balls for Bowling This Month. When not testing balls for BTM, Eric owns and operates University Pro Shop in San Antonio, TX and he is an avid competitive bowler. Click here to learn more about how we test and review bowling balls.