# Columbia 300 Rally

> Bowling ball — data from CarryDown (https://www.carrydown.com/balls/columbia-300-rally/)

- Brand: Columbia 300
- Availability: discontinued
- Released/approved: 2025-04-17
- Coverstock: HK22C - Formula 1 Hybrid (hybrid)
- Core: Shifter
- Intended condition: Medium-heavy oil
- Factory finish: 500, 2000 Siaair Micro Pad
- USBC approved: yes (2025-04-01)
- PBA certified: yes

## Specs by weight

| Weight | RG | Differential | Int. Diff | Mass Bias |
|---|---|---|---|---|
| 16 lb | 2.48 | 0.049 | 0.015 | — |
| 15 lb | 2.478 | 0.05 | 0.015 | — |
| 14 lb | 2.494 | 0.05 | 0.015 | — |
| 13 lb | 2.597 | 0.041 | 0.014 | — |
| 12 lb | 2.593 | 0.041 | 0.014 | — |

## Description

Overview

Introducing the Columbia 300 Rally, the latest high-performance addition to the Columbia 300 lineup and the perfect follow-up to the renowned Speed series. Featuring the Shifter core—one of Columbia 300’s most trusted and successful asymmetric designs—the Rally takes performance to the next level. Finished with a 2000 grit, it combines the cutting-edge HK22 coverstock with Cohesion and Formula 1 additives, ensuring an exceptional combination of strength, control, and versatility. With its ability to handle various lane conditions, the Rally is set to become your new go-to ball, delivering outstanding results on any medium to oily condition. Get ready to rally your game with unmatched performance.