Bowler Ratings


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

Note: Ratings are only available to our premium members.

General Info

Reviewed:April 2024
Coverstock Specs
Name:HK22 - Reflex Pearl
Type:Reactive Pearl
Box Finish:500 / 1000 / 1500 SiaAir / Factory Compound
Color:Blue / Sapphire
Core Specs
Int. Diff:0.000

For details on our standard test layouts, please click here.

The Kaboom introduces a new core shape into the Columbia 300 line. The new Detonate symmetrical design provides the highest RG in the current C300 lineup at 2.529″. With a differential of 0.043″ and the HK22-based Reflex Pearl coverstock, the Kaboom created more midlane traction and a stronger breakpoint than the Eruption Pearl while covering fewer boards than the Explosion. Finished with 500/1000/1500 SiaAir and Factory Compound, our testers liked the Kaboom best on our medium and dry test patterns.


Stroker had the best look out of the three testers on the medium oil pattern. He saw very easy length, with a strong move at the back end that helped him kick out a few more corner pins than Tweener and Cranker. He could play a small swing to the right off his hand, with room to miss both inside and outside of his target downlane. He liked his reaction even more as the pattern saw more traffic. When there was more friction in the track area, he had even more room for error with the Kaboom at its box finish.

Stroker also had the best reaction of our three bowlers on the dry test pattern. The Factory Compound box finish and pearlized coverstock provided enough length while he played a small swing to the outside. The sharper motion downlane made it easy for Stroker to start moving left as the session progressed. He saw less angularity and less total hook on this pattern compared to the Cuda PowerCOR Pearl. He liked how easy it

Additional Columbia 300 Kaboom Resources

Click here to visit Columbia 300's website to read the manufacturer-supplied information on this ball. Also, see below for the manufacturer-produced promotional video for this ball.

Please remember that our reviews are solely based on our own testing and that you may sometimes find differences between our comments and ratings and the manufacturer's claims. Links to these manufacturer resources are provided here strictly for convenience purposes.

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.