When it comes to rimfire cartridges, two names often spark debate among shooters: the 17 HM2 and the 17 HMR. Both offer impressive speed and flat trajectories, making them popular choices for varmint hunting and target practice. However, beneath their similar appearances lie distinct differences that can significantly impact your shooting experience.
Choosing between the 17 HM2 and the 17 HMR isn’t a simple matter of preference; it’s about understanding their performance characteristics, ammunition availability, and intended applications. This comparison will delve into the nuances that set these two cartridges apart.
Are you looking for a budget-friendly option or maximum velocity? We’ll break down the ballistics, recoil, and cost-effectiveness of each to help you make an informed decision for your next firearm purchase.
Specs at a Glance
| Feature | 17hm2 | 17 hmr |
|---|---|---|
| Cartridge Type | Rimfire | Rimfire |
| Bullet Diameter | 0.172 inches | 0.172 inches |
| Case Length | 0.700 inches | 0.898 inches |
| Overall Length | 0.960 inches | 1.345 inches |
| Typical Bullet Weight | 17 gr, 20 gr | 17 gr, 20 gr, 25 gr |
| Muzzle Velocity (approx.) | 2100 – 2300 fps | 2500 – 2700 fps |
| Muzzle Energy (approx.) | 200 – 250 ft-lbs | 250 – 350 ft-lbs |
| Effective Range (approx.) | 150 – 175 yards | 200 – 250 yards |
| Recoil | Very Light | Light |
| Barrel Twist Rate (common) | 1:9 inches | 1:9 inches |
| Common Uses | Varminting, small game | Varminting, prairie dogs, small game |
| Availability | Less common | More common |
Feature-by-Feature Breakdown
Cartridge Size & Case
- 17hm2: Based on the .22 LR rimfire case, it’s a smaller, less powerful cartridge. Its smaller case limits powder capacity, contributing to its lower velocity and energy.
- 17 Hmr: Utilizes a necked-down .22 WMR case, which is significantly larger. This larger case allows for more powder, resulting in higher velocities and greater energy output.
- Winner: 17 hmr
Muzzle Velocity
- 17hm2: Typically achieves velocities around 2100-2200 feet per second (fps). This is respectable for a rimfire but lower than its larger counterpart.
- 17 Hmr: Boasts significantly higher muzzle velocities, often in the range of 2350-2550 fps. This higher speed contributes to flatter trajectories and reduced bullet drop.
- Winner: 17 hmr
Muzzle Energy
- 17hm2: Generates around 200-250 foot-pounds (ft-lbs) of energy. This is adequate for small varmints at closer ranges.
- 17 Hmr: Produces considerably more energy, typically between 250-300 ft-lbs. This greater energy provides more impact and better terminal ballistics on small to medium varmints.
- Winner: 17 hmr
Effective Range
- 17hm2: Best suited for ranges up to 100-125 yards. Beyond this, its energy and velocity drop off considerably, making it less effective.
- 17 Hmr: Excels at longer ranges, with an effective range often extending to 150-200 yards or even further for skilled shooters. Its flatter trajectory makes range estimation less critical.
- Winner: 17 hmr
Bullet Weight & Construction
- 17hm2: Commonly uses 17-grain bullets. These are designed for rapid expansion and fragmentation on small targets.
- 17 Hmr: Available in a wider range of bullet weights, most commonly 17-grain but also 20-grain options. This variety allows for tailored performance for different varmint sizes and hunting scenarios.
- Winner: 17 hmr
Recoil & Noise
- 17hm2: Known for its very mild recoil and relatively quiet report, making it very pleasant to shoot. This is a significant advantage for new shooters or extended practice sessions.
- 17 Hmr: While still mild compared to centerfire cartridges, it has slightly more recoil and a louder muzzle blast than the 17hm2. This is a trade-off for its increased power.
- Winner: 17hm2
Ammunition Cost & Availability
- 17hm2: Ammunition can be harder to find and sometimes more expensive than common rimfires like .22 LR. Its niche status can impact availability.
- 17 Hmr: Ammunition is widely available from numerous manufacturers and often competitively priced, especially when bought in bulk. Its popularity ensures good supply.
- Winner: 17 hmr
Firearm Availability & Variety
- 17hm2: Firearms chambered in 17hm2 are less common than those for other popular rimfire cartridges. This limits the selection of rifles and pistols available.
- 17 Hmr: Is available in a vast array of bolt-action rifles, semi-automatics, and even some handguns from many different manufacturers. This wide selection caters to diverse shooter preferences.
- Winner: 17 hmr
Winner by Category
| Category | Winner |
|---|---|
| Bullet Velocity | 17 hmr |
| Bullet Energy | 17 hmr |
| Effective Range | 17 hmr |
| Ammunition Cost (per round) | 17hm2 |
| Rifle Availability | 17 hmr |
| Recoil | 17hm2 |
| Varmint Effectiveness | 17 hmr |
What They Have in Common
- Caliber: Both cartridges are chambered in .17 caliber, meaning they fire a bullet with a diameter of 0.172 inches. This small diameter contributes to their high velocity and flat trajectory.
- Purpose: Both the 17hm2 and 17 hmr are primarily designed for varmint hunting and pest control. Their high-speed, small-diameter bullets are effective at quickly dispatching small, fast-moving targets.
- Rimfire Design: Both are rimfire cartridges, which means the priming compound is located in the rim of the cartridge case. This makes them generally more affordable to shoot than centerfire ammunition.
- Flat Trajectory: Due to their high velocities, both cartridges boast very flat trajectories, making them easier to shoot accurately at longer distances without significant holdover adjustments.
- Minimal Recoil: Shooters of all experience levels appreciate the minimal recoil generated by both the 17hm2 and 17 hmr. This allows for comfortable shooting sessions and easier follow-up shots.
- Barrel Twist: Both cartridges typically utilize a rifling twist rate of 1:9 inches. This twist rate is generally well-suited for stabilizing the common bullet weights for both cartridges.
17Hm2 Vs 17 Hmr Buying Guide
Purpose and Application
The 17 HM2 (Hornady Mach 2) and 17 HMR (Hornady Magnum Rimfire) are both rimfire cartridges designed for varmint hunting and target shooting. The 17 HM2 is generally considered a more economical choice for plinking and small pest control at shorter ranges due to its lower velocity and less powerful recoil. Its lighter bullet weight makes it effective against smaller targets like squirrels and rabbits.
Conversely, the 17 HMR offers superior ballistic performance, making it a better option for longer-range varmint hunting. Its higher muzzle velocity and flatter trajectory allow for more precise shots on prairie dogs, groundhogs, and other medium-sized varmints at distances exceeding 100 yards. The increased energy also provides better terminal ballistics for more decisive takedowns. (See Also: Demeyere 5 Plus Vs Atlantis )
Ammunition Cost and Availability
A significant factor in choosing between these two cartridges is the cost and availability of ammunition. Generally, 17 HM2 ammunition is more affordable than 17 HMR. This cost difference can be substantial over time, especially for shooters who frequently engage in practice sessions or extensive varmint hunting. The lower price point makes the 17 HM2 an attractive option for budget-conscious individuals.
While 17 HMR ammunition is more expensive, its widespread popularity has led to excellent availability in most sporting goods stores and online retailers. You’re less likely to encounter supply issues with 17 HMR compared to the 17 HM2, which might have a more limited selection and potentially be harder to find in some areas. This availability factor can be crucial for hunters who rely on consistent access to their preferred ammunition.
Firearm Options and Recoil
When considering a new rifle, the availability of firearms chambered in each caliber is important. Both 17 HM2 and 17 HMR are offered in a variety of bolt-action rifles, often from reputable manufacturers known for their rimfire firearms. However, the selection for 17 HMR might be slightly broader, reflecting its greater market share and popularity. When choosing a rifle, consider the intended use; lighter rifles are excellent for carrying in the field, while heavier options can enhance accuracy for benchrest shooting.
Recoil is another factor, although both cartridges are known for being very mild. The 17 HM2, with its lower velocity and lighter bullet, produces even less felt recoil than the 17 HMR. This makes it exceptionally comfortable to shoot, even for young or recoil-sensitive shooters, allowing for extended practice sessions without fatigue. The 17 HMR still offers a very manageable recoil, making it suitable for most shooters, but the HM2 is the clear winner for those prioritizing the absolute least amount of kick. (See Also: Nikon 50 1 8 Vs 1 4 )
Performance and Ballistics
The performance difference between the 17 HM2 and 17 HMR is primarily dictated by their velocities and bullet weights. The 17 HM2 typically fires a 17-grain bullet at around 2100-2200 feet per second (fps), resulting in a relatively steep trajectory. This makes it ideal for varmint control at distances up to about 100 yards where its accuracy and effectiveness are still quite good for small game.
In contrast, the 17 HMR boasts significantly higher velocities, often pushing a 17-grain bullet to around 2500-2650 fps. This translates to a much flatter trajectory, less wind drift, and superior energy retention at longer ranges. The 17 HMR truly shines for varmint hunters who need to make precise shots on targets at 150 yards and beyond, offering a distinct advantage in terms of reach and terminal performance.
Who Should Buy What?
Buy 17hm2 If…
- You are looking for the absolute cheapest rimfire cartridge for high-volume practice or pest control.
- You prioritize an ultra-light recoil experience above all else.
- You have a rifle specifically chambered for the 17hm2 and want to utilize its unique performance.
Buy 17 hmr If…
- You want a highly effective varmint round with a bit more power and range than the 17hm2.
- You prefer a cartridge that is widely available and has a larger selection of rifle options.
- You are looking for a good balance of speed, energy, and flat trajectory for prairie dog hunting and similar pursuits.
Frequently Asked Questions
What is the primary difference between 17 HM2 and 17 HMR?
The primary difference lies in their performance and intended use. The 17 HM2 is a milder cartridge, generally more affordable, and suited for shorter-range varmint control and plinking. The 17 HMR is a more powerful cartridge, offering higher velocities, a flatter trajectory, and better energy retention, making it superior for longer-range varmint hunting and precision shooting.
Which cartridge is better for beginners?
For beginners, especially those sensitive to recoil or on a tighter budget, the 17 HM2 is often the better choice. Its lower recoil makes it very comfortable to shoot, promoting good shooting habits without the distraction of felt recoil. The ammunition is also generally less expensive, allowing for more practice time without breaking the bank. (See Also: Samsung Pro Vs Evo 850 )
Can I hunt larger varmints with the 17 HM2?
While the 17 HM2 can humanely dispatch small varmints like squirrels and rabbits at closer ranges, it is generally not recommended for larger varmints such as groundhogs or coyotes. These animals require more energy transfer for a clean kill, and the 17 HMR offers a significant advantage in this regard, making it the more ethical and effective choice for slightly larger quarry.
Is the 17 HMR significantly more expensive to shoot?
Yes, the 17 HMR is generally more expensive to shoot than the 17 HM2. Ammunition for the 17 HMR typically costs more per box, and this price difference can add up quickly for frequent shooters. While the performance benefits of the 17 HMR are undeniable for long-range work, the higher cost is a crucial consideration for budget-conscious enthusiasts.
Which cartridge is more accurate?
Both cartridges are inherently accurate, capable of sub-MOA (Minute of Angle) performance in well-matched rifles. However, the 17 HMR’s flatter trajectory and superior ballistic coefficient mean it maintains its accuracy and is less affected by wind at longer distances. For precision shooting beyond 100 yards, the 17 HMR will generally offer better inherent accuracy potential due to its ballistics.
Final Verdict
The choice between the 17 HM2 and 17 HMR hinges on your specific needs and budget. For casual plinking, small varmint control at close range, and a more economical shooting experience, the 17 HM2 is an excellent and comfortable option. However, for serious varmint hunters demanding superior reach, flatter trajectory, and more energy at distance, the 17 HMR is the clear winner, providing a significant ballistic advantage for ethical and effective long-range pest control.
Winner: 17 HMR