The Ruger 17 Mach 2, officially the .17 HM2 (Hornady Magnum Rimfire 2), remains a fascinating and somewhat controversial cartridge in the world of rimfire firearms. While it boasts impressive accuracy and velocity for a rimfire round, its relatively short lifespan and limited availability have kept it from achieving widespread popularity. This deep dive explores the strengths, weaknesses, and enduring legacy of the Ruger 17 Mach 2.
Understanding the .17 HM2 Cartridge
Developed by Hornady and championed by Ruger, the .17 HM2 was designed to offer a higher-velocity, flatter-shooting option than the popular .22LR. Its smaller diameter and lighter bullet result in less wind drift and a flatter trajectory at longer ranges, making it ideal for small game hunting and target shooting. The cartridge utilizes a unique case design, slightly necked down from the .22LR, which contributes to its higher velocity.
Key Features and Specifications:
- Caliber: .17 (4.5mm)
- Case Type: Rimfire
- Bullet Weight: Typically 17 grains (1.1g)
- Velocity: Around 2500 fps (760 m/s)
- Accuracy: Known for exceptional accuracy potential.
The Ruger Firearms Chambered in .17 HM2
Ruger's commitment to the .17 HM2 is evident in the range of firearms they produced. Most notably, several models of the Ruger 77/22 and the Ruger 10/22, both highly respected rimfire rifles, were chambered for this round. This demonstrates Ruger's belief in the cartridge's potential, despite the limitations it faced. Finding these firearms today often involves searching specialty gun shops or the used market.
Advantages of the .17 HM2
- Flat Trajectory: The higher velocity translates to a flatter trajectory compared to the .22LR, leading to improved accuracy at longer ranges.
- Less Wind Drift: The smaller, lighter bullet is less susceptible to wind deflection, resulting in more consistent shot placement.
- High Velocity: For a rimfire round, the .17 HM2 achieves impressive velocities.
Disadvantages of the .17 HM2
- Limited Availability: Ammunition for the .17 HM2 is significantly harder to find than for the ubiquitous .22LR, a major factor contributing to its decline in popularity.
- Case Life: The case design, while contributing to higher velocity, is also prone to case failure after a relatively small number of firings. This is a significant drawback, adding to the cost and inconvenience for shooters.
- Relatively High Cost: What ammunition is available tends to be more expensive than .22LR.
The .17 HM2's Legacy: A Niche Cartridge
Ultimately, the .17 HM2 failed to gain widespread adoption. Its unique strengths were overshadowed by the significant drawbacks of limited ammunition availability, case life issues, and higher cost. While it didn't achieve mainstream success, it holds a place in firearms history as an interesting and ambitious attempt to push the boundaries of rimfire technology. It remains a desirable cartridge for collectors and enthusiasts who appreciate its accuracy and performance characteristics, making it a sought-after piece for those who can find the ammunition.
Conclusion: A Collector's Item or a Potential Comeback?
The Ruger 17 Mach 2 (.17 HM2) serves as a reminder that not every innovative cartridge finds its way to mass adoption. While its legacy may be one of "what could have been," its unique performance characteristics still resonate with some shooters. Whether it will ever see a resurgence remains to be seen, but its impact on rimfire technology is undeniable. The availability of firearms and ammunition will dictate its future role in the shooting world.
