Choosing the right cartridge can significantly impact your shooting experience, whether you're a seasoned hunter or a recreational shooter. The 5.7x28mm and the .17 HMR are both popular choices, but they cater to different needs and preferences. This in-depth comparison will explore the key differences between these two rounds, helping you make an informed decision.
Ballistics: Speed, Energy, and Range
The most significant difference lies in their ballistics. The 5.7x28mm, developed by FN Herstal, boasts higher velocity and significantly greater energy than the .17 HMR. This translates to a flatter trajectory and longer effective range, making it suitable for longer shots and more challenging hunting situations.
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5.7x28mm: Known for its high velocity and relatively flat trajectory, this round offers superior penetration and stopping power, making it effective against smaller game and even some larger animals at closer ranges. Its smaller size allows for higher capacity magazines.
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.17 HMR (Hornady Magnum Rimfire): This rimfire cartridge is popular for its high velocity for a rimfire, but its energy is considerably lower than the 5.7x28mm. Its accuracy and flatter trajectory are excellent for varmint hunting at moderate ranges. Its smaller size makes it suitable for smaller, lighter firearms.
| Feature | 5.7x28mm | .17 HMR |
|---|---|---|
| Caliber | 5.7x28mm | .17 HMR (.172 inch) |
| Velocity | Significantly Higher (around 2800 fps+) | Higher than standard .22 rimfire (2500 fps+) |
| Energy | Significantly Higher | Lower |
| Range | Longer Effective Range | Shorter Effective Range |
| Trajectory | Flatter | Flatter than standard .22 rimfire |
Applications: Hunting and Target Shooting
The intended use significantly influences the cartridge choice.
Hunting:
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5.7x28mm: While effective on smaller game like varmints, its higher energy makes it suitable for taking down larger animals at closer ranges, depending on shot placement and ethical hunting considerations. Its penetrating power is a key advantage. However, the availability and cost of ammunition might be a factor.
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.17 HMR: Ideal for varmint hunting, particularly rabbits, squirrels, and prairie dogs. Its high velocity and accuracy make it an excellent choice for precise shots at moderate ranges. The lower cost of ammunition is a significant benefit.
Target Shooting:
Both cartridges are capable of delivering excellent accuracy, but the .17 HMR might be more suitable for informal target practice due to lower ammunition costs. The 5.7x28mm, while accurate, may be more expensive to shoot regularly for this purpose.
Firearms and Availability:
The 5.7x28mm is typically found in dedicated firearms like the FN Five-seveN pistol and PS90 carbine. The .17 HMR is widely available in various rifles from manufacturers like Ruger, Savage, and Marlin.
Cost and Ammunition:
The 5.7x28mm ammunition tends to be more expensive than .17 HMR ammunition. This is a crucial factor to consider, especially for frequent shooting.
Conclusion: The Right Choice Depends on Your Needs
Ultimately, the best cartridge depends on your specific needs and intended use. The 5.7x28mm offers superior power, range, and penetration, making it ideal for situations demanding more stopping power, while the .17 HMR excels in accuracy and affordability for varmint hunting and recreational shooting at shorter ranges. Carefully consider your budget, intended use, and the availability of firearms and ammunition when making your decision.
