About 17 HMR Ammo
17 HMR ammo (17 Hornady Magnum Rimfire) is a high-velocity rimfire cartridge known for its exceptional accuracy, flat trajectory, and impressive performance for small game hunting and target shooting.
Introduced in 2002 by Hornady, the cartridge was designed to deliver significantly higher speeds and improved long-range performance compared to traditional rimfire options like 22 LR and 22 WMR. By combining lightweight .17-caliber bullets with modern ballistic design, the 17 HMR quickly established itself as one of the most innovative rimfire cartridges developed in decades.
The development of the 17 Hornady Magnum Rimfire began when Hornady engineers experimented with modifying the popular 22 Winchester Magnum Rimfire (22 WMR) case.
By necking down the case to accept a .172-caliber projectile, designers created a smaller, faster bullet capable of reaching velocities around 2,650 feet per second, which is extremely fast for a rimfire cartridge.
Hornady worked closely with rifle manufacturers such as Marlin and Ruger to bring both rifles and ammunition to market at the same time, helping ensure the cartridge gained immediate traction among shooters.
When the cartridge first appeared, it filled an important gap in the rimfire market.
For decades, rimfire shooters primarily relied on 22 LR for affordable practice and 22 WMR for increased power, but neither offered the same combination of speed, flat trajectory, and precision. The 17 HMR was designed to outperform the 22 WMR in velocity and trajectory while maintaining the low recoil and affordability that rimfire shooters expect.
The introduction of 17 HMR ammunition had a noticeable impact on the shooting sports community. Varmint hunters quickly adopted the cartridge because of its ability to deliver accurate shots at extended rimfire distances, often out to 150 yards or more with minimal recoil.
The round also became popular among target shooters who appreciated its accuracy and ability to produce tight groups at longer distances compared to most rimfire cartridges.
Today, 17 HMR ammo remains one of the most popular rimfire cartridges for varmint hunting, pest control, and precision rimfire shooting. With a wide selection of bullet types, including polymer-tipped, hollow point, and soft point loads, shooters can choose ammunition tailored to their specific needs.
More than two decades after its introduction, the 17 HMR continues to be recognized as a groundbreaking rimfire cartridge that expanded the performance potential of rimfire rifles and reshaped expectations for accuracy and velocity in the category.
17 HMR Ammunition Grain Weights
17 HMR ammo (17 Hornady Magnum Rimfire) is known for its high velocity, flat trajectory, and excellent accuracy.
One of the reasons the cartridge performs so well is the variety of grain weights and projectile types available. Different bullet designs allow shooters to tailor their ammunition for varmint hunting, pest control, or precision target shooting.
Below are some of the most popular 17 HMR bullet weights and projectile styles used by rimfire shooters today.
15.5 Grain Weight
- 15.5 grain 17 HMR ammo is one of the lightest bullet options available for the cartridge.
- These ultra-light projectiles are designed for maximum velocity and minimal bullet drop, making them ideal for varmint and small pest control.
- Their high speed also helps produce rapid expansion on impact.
17 Grain Weight
- The 17 grain bullet is the most common and widely available option for 17 HMR ammunition.
- These loads offer an excellent balance of velocity, accuracy, and terminal performance, making them a popular choice for both target shooting and small game hunting.
- Many manufacturers produce 17 grain loads in a variety of bullet styles.
20 Grain Weight
- 20 grain 17 HMR ammo features a slightly heavier projectile designed for improved penetration and better performance in windy conditions.
- These loads are often favored by hunters pursuing small game or varmints where deeper penetration and consistent performance are important.
17 HMR Bullet Types
Polymer Tip Bullet
- Polymer-tipped bullets are one of the most popular projectile types for 17 HMR ammo.
- These bullets feature a polymer tip that improves the bullet’s aerodynamics and ballistic coefficient, helping maintain velocity and accuracy at longer distances.
- They are commonly used for varmint hunting and precision rimfire shooting.
Hollow Point Bullets
- Hollow point 17 HMR ammo is designed to expand rapidly upon impact.
- This bullet type is often used for small game hunting and pest control, where controlled expansion helps deliver effective terminal performance while minimizing over-penetration.
Jacketed Soft Point Bullets
- Jacketed soft point (JSP) bullets feature a partially exposed lead tip that promotes controlled expansion and deeper penetration.
- These loads are commonly chosen for small game hunting where reliable expansion and energy transfer are desired.
Fragmenting Varmint Bullets
- Some 17 HMR varmint loads use specially designed fragmenting projectiles that break apart upon impact.
- These bullets are designed for rapid energy transfer and effective pest control, making them popular among varmint hunters and ranchers managing small pests.
Popular 17 HMR Ammo Manufacturers
When shopping for 17 HMR ammo (17 Hornady Magnum Rimfire), choosing ammunition from a trusted manufacturer helps ensure consistent performance, reliable ignition, and excellent accuracy. Many leading ammunition brands produce high-quality 17 HMR cartridges designed for varmint hunting, pest control, and precision rimfire shooting.
Below are some of the most popular 17 HMR ammo manufacturers trusted by shooters today.
Browning Ammunition offers a range of high-quality rimfire cartridges designed for hunting and target shooting.
Known for producing reliable ammunition with consistent performance, Browning’s 17 HMR ammo is often favored by varmint hunters looking for dependable expansion and accuracy in the field.
CCI (Cascade Cartridge Inc.) is one of the most respected manufacturers of rimfire ammunition in the world.
Their 17 HMR loads are widely used for target shooting, small game hunting, and varmint control thanks to their accuracy and dependable ignition.
Federal Ammunition is a major name in the shooting industry, producing a wide variety of ammunition for hunters, sport shooters, and professionals.
Federal’s 17 HMR ammo delivers reliable performance and is commonly used for small game hunting and precision rimfire shooting.
Hornady Manufacturing is the original developer of the 17 HMR cartridge, which was introduced in 2002.
Known for its advanced bullet technology and commitment to precision, Hornady produces several popular 17 HMR loads, including polymer-tipped varmint bullets designed for excellent accuracy and high velocity.
Remington Ammunition has a long history of producing reliable ammunition for hunters and shooters.
Known for trusted product lines and dependable performance, Remington manufactures 17 HMR cartridges designed for small game hunting and recreational shooting. Their loads are commonly chosen for their reliability and consistent field performance.
Winchester Ammunition is one of the most historic names in the firearms industry, with roots dating back to 1866.
The company produces a wide selection of rimfire cartridges, including 17 HMR ammo designed for hunting and target shooting. Winchester loads are widely trusted for their durability, consistent quality, and dependable accuracy.
Key Differences: 17 HMR vs 22LR
Velocity and Trajectory
One of the biggest differences between 17 HMR and 22 LR ammo is velocity. 17 HMR ammunition typically reaches speeds around 2,500–2,650 feet per second, giving it a much flatter trajectory and extended effective range.
In contrast, most 22 LR ammo travels between 1,100 and 1,300 feet per second. This makes 17 HMR better suited for longer-distance rimfire shooting, while 22 LR is ideal for shorter-range target practice.
Accuracy and Range
Both cartridges are known for good accuracy, but 17 HMR ammo generally performs better at longer distances.
The lightweight .17-caliber bullet combined with its high velocity allows shooters to maintain accuracy at 100 to 150 yards or more. 22 LR ammo, while very accurate at closer ranges, is typically most effective within 50 to 100 yards for consistent precision.
Cost and Availability
22 LR ammunition is one of the most affordable and widely available cartridges in the world.
This makes it extremely popular for high-volume training, recreational shooting, and beginner shooters. 17 HMR ammo, while still affordable compared to centerfire cartridges, typically costs more due to its specialized design and higher performance.
Hunting and Field Use
Both cartridges are commonly used for varmint and small game hunting, but they excel in slightly different roles.
22 LR is often preferred for small game hunting and quiet pest control at shorter distances, especially in wooded areas. 17 HMR ammo is favored by many hunters for varmint hunting in open terrain, where its higher velocity and flatter trajectory allow for accurate shots at longer ranges.
Recoil and Shooting Experience
Both 22 LR and 17 HMR cartridges produce very low recoil, making them comfortable for shooters of all experience levels. However, 22 LR is generally considered the most beginner-friendly option because of its extremely light recoil and inexpensive ammunition.
17 HMR Ammo FAQs
QUESTION: What is 17 HMR ammo?
ANSWER: 17 HMR ammo (17 Hornady Magnum Rimfire) is a high-velocity rimfire cartridge introduced by Hornady in 2002. Designed by necking down the 22 WMR case to accept a .17-caliber bullet, 17 HMR ammunition delivers excellent speed, flat trajectory, and impressive accuracy. It is widely used for varmint hunting, small game, and precision rimfire shooting.
QUESTION: What is 17 HMR rimfire ammo used for?
ANSWER: 17 HMR rimfire ammo is commonly used for varmint hunting, pest control, target shooting, and small game hunting. Its high velocity and flat trajectory make it especially effective for small animals such as ground squirrels, prairie dogs, and rabbits at longer rimfire distances.
QUESTION: How far can you shoot with 17 HMR ammo?
ANSWER: Most shooters consider the effective range of 17 HMR ammunition to be around 100 to 150 yards for accurate shooting. Thanks to its high velocity and flat trajectory, many shooters find that 17 HMR rimfire ammo maintains better accuracy at longer distances than traditional 22 LR cartridges.
QUESTION: Is 17 HMR more powerful than 22 LR?
ANSWER: Yes. 17 HMR ammo generally produces much higher velocity than 22 LR ammo, often reaching speeds around 2,500 feet per second. This results in a flatter trajectory and improved performance at longer distances, making 17 HMR rimfire ammo a popular choice for varmint hunters.
QUESTION: What grain weights are available for 17 HMR ammunition?
ANSWER: Most 17 HMR ammo is available in bullet weights between 15.5 grains and 20 grains, with 17 grain bullets being the most common. Lighter bullets typically offer higher velocity, while slightly heavier bullets can provide improved penetration and performance in windy conditions.
QUESTION: Is 17 HMR good for target shooting?
ANSWER: Yes. Many shooters use 17 HMR rimfire ammo for precision rimfire target shooting because of its excellent accuracy and flat trajectory. It allows shooters to practice at longer distances while still benefiting from the low recoil typical of rimfire cartridges.
QUESTION: Can 17 HMR ammo be used for small game hunting?
ANSWER: Yes. 17 HMR ammunition is commonly used for hunting small game such as rabbits, squirrels, and other small animals. Its fast-moving bullet helps deliver quick, clean shots when used at appropriate distances.
QUESTION: Is 17 HMR ammo good for beginners?
ANSWER: 17 HMR rimfire ammo produces very low recoil and is easy to shoot, which makes it approachable for many shooters. However, beginners often start with 22 LR because it is more affordable for high-volume practice. Once shooters gain experience, many upgrade to 17 HMR ammo for longer-range rimfire performance.
QUESTION: Is 17 HMR ammo widely available?
ANSWER: Yes. 17 HMR ammunition is produced by many major manufacturers including Hornady, CCI, Federal, Winchester, and Remington. Because of its popularity among hunters and rimfire enthusiasts, it is widely available in a variety of bullet types and grain weights.
QUESTION: What rifles use 17 HMR ammo?
ANSWER: 17 HMR ammo is typically used in bolt-action, lever-action, and semi-automatic rimfire rifles specifically chambered for the cartridge. Many firearm manufacturers produce rifles designed for 17 HMR rimfire ammo, making it easy for shooters to find rifles and ammunition for this popular caliber.